A viewset for viewing and editing Calendars.

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{
    "count": 531,
    "next": null,
    "previous": "https://seshat-db.com/api/sc/calendars/?format=api&page=10",
    "results": [
        {
            "id": 502,
            "polity": {
                "id": 209,
                "name": "ma_mauretania",
                "long_name": "Mauretania",
                "start_year": -125,
                "end_year": 44
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": null,
            "description": "\"In general, the period of the independent Numidian and Mauretanian kingdoms saw the evolution and entrenchment of a culture of mixed Libyan and Phoenician character, the latter element being culturally dominant though naturally representing only a minority of the population as a whole.\"§REF§(Mahjoubi and Salama 1981, 462-463) A Mahjoubi and P Salama. The Roman and post-Roman period in North Africa. G Mokhtar. ed. 1981. General History of Africa II. Ancient Civilizations of Africa. Heinemann. California.§REF§ \"By the late second century BC, Roman interests were so strong that portions of Mauretania could even be described as Roman territory, although this was clearly a cultural, not a legal, definition.\"§REF§(Roller 2003, 47) Duane W Roller. 2003. The World of Juba II and Kleopatra Selene: Royal Scholarship on Rome's African Frontier. Routledge. New York.§REF§ Juba II (educated in Italy) \"became a very learned scholar and was granted Roman citizenship.\"§REF§(Sayles 1998, 114-115) Wayne G Sayles. 1998. Ancient Coin Collecting IV. Roman Provincial Coins. Krause Publications. Iola.§REF§ \"By the late second century BC, Roman interests were so strong that portions of Mauretania could even be described as Roman territory, although this was clearly a cultural, not a legal, definition.\"§REF§(Roller 2003, 47) Duane W Roller. 2003. The World of Juba II and Kleopatra Selene: Royal Scholarship on Rome's African Frontier. Routledge. New York.§REF§ \"Ruling for over 40 years as a completely loyal client king, Juba did to some degree in Mauretania what Masinissa had done in Numidia. He was a man of largely peaceful interests, fully hellenized in culture, and the author of many books (now lost) written in Greek. There is no doubt that his capital Iol, renamed Caesarea (Oherchell), and probably also an alternative capital, Volubilis, became fully urbanized in his reign.\"§REF§(Mahjoubi and Salama 1981, 462) A Mahjoubi and P Salama. The Roman and post-Roman period in North Africa. G Mokhtar. ed. 1981. General History of Africa II. Ancient Civilizations of Africa. Heinemann. California.§REF§"
        },
        {
            "id": 503,
            "polity": {
                "id": 55,
                "name": "pa_cocle_2",
                "long_name": "Middle Greater Coclé",
                "start_year": 700,
                "end_year": 1000
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "absent",
            "comment": "Panamanian societies were non-literate before Spanish contact.  <a class=\"fw-bold\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/IPHPU92K\">[Mendizábal_Archibold 2004, p. 14]</a>",
            "description": null
        },
        {
            "id": 504,
            "polity": {
                "id": 52,
                "name": "pa_monagrillo",
                "long_name": "Monagrillo",
                "start_year": -3000,
                "end_year": -1300
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "absent",
            "comment": "Panamanian societies were non-literate before Spanish contact.  <a class=\"fw-bold\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/IPHPU92K\">[Mendizábal_Archibold 2004, p. 14]</a>",
            "description": null
        },
        {
            "id": 505,
            "polity": {
                "id": 530,
                "name": "mx_monte_alban_5_a",
                "long_name": "Monte Alban V Early Postclassic",
                "start_year": 900,
                "end_year": 1099
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": null,
            "description": "Spanish written records refer to the Zapotec calendars, one 365 day calendar and one 260 day ‘ritual’ calendar called ‘pije/ piye’, which links to the Zapotec word ‘pé’ for life).§REF§Flannery, K. V. and J. Marcus (1976). \"Formative Oaxaca and Zapotec Cosmos.\" American Scientist 64(4): 374-383. p376§REF§"
        },
        {
            "id": 506,
            "polity": {
                "id": 531,
                "name": "mx_monte_alban_5_b",
                "long_name": "Monte Alban V Late Postclassic",
                "start_year": 1101,
                "end_year": 1520
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": null,
            "description": "Spanish written records refer to the Zapotec calendars, one 365 day calendar and one 260 day ‘ritual’ calendar called ‘pije/ piye’, which links to the Zapotec word ‘pé’ for life).§REF§Flannery, K. V. and J. Marcus (1976). \"Formative Oaxaca and Zapotec Cosmos.\" American Scientist 64(4): 374-383. p376§REF§"
        },
        {
            "id": 507,
            "polity": {
                "id": 775,
                "name": "mw_northern_maravi_k",
                "long_name": "Northern Maravi Kingdom",
                "start_year": 1500,
                "end_year": 1621
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "absent",
            "comment": "The following suggests that writing did not develop indigenously in the region. \"The earliest of the written documents on Malawi go back to the sixteenth century. Some adventurous Portuguese explorers and traders who periodically passed through central and southern Malawi as they sought minerals and other resources in the interior of the region wrote these documents.\"  <a class=\"fw-bold\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/IT7NS8P7\">[Juwayeyi 2020]</a>",
            "description": null
        },
        {
            "id": 508,
            "polity": {
                "id": 313,
                "name": "ru_novgorod_land",
                "long_name": "Novgorod Land",
                "start_year": 880,
                "end_year": 1240
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": "Church.",
            "description": null
        },
        {
            "id": 509,
            "polity": {
                "id": 206,
                "name": "dz_numidia",
                "long_name": "Numidia",
                "start_year": -220,
                "end_year": -46
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": null,
            "description": "Numidia was \"something of a centre of Punic literary culture.\"§REF§(Law 1978, 184) R C C Law. North Africa in the Hellenistic and Roman periods, 323 BC to AD 305. J D Fage. Roland Anthony Oliver. eds. 1978. The Cambridge History of Africa, Volume 2. c. 500 B.C. - A.D. 1050. Cambridge University Press. Cambridge.§REF§ King Micipsa encouraged \"learned Greeks to come to settle at Cirta.\"§REF§(Law 1978, 184) R C C Law. North Africa in the Hellenistic and Roman periods, 323 BC to AD 305. J D Fage. Roland Anthony Oliver. eds. 1978. The Cambridge History of Africa, Volume 2. c. 500 B.C. - A.D. 1050. Cambridge University Press. Cambridge.§REF§"
        },
        {
            "id": 510,
            "polity": {
                "id": 542,
                "name": "tr_ottoman_emp_4_copy",
                "long_name": "Yemen - Ottoman period",
                "start_year": 1873,
                "end_year": 1920
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": "See above.",
            "description": null
        },
        {
            "id": 511,
            "polity": {
                "id": 773,
                "name": "mw_pre_maravi",
                "long_name": "Pre-Maravi",
                "start_year": 1151,
                "end_year": 1399
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "absent",
            "comment": "The following suggests that writing did not develop indigenously in the region. \"The earliest of the written documents on Malawi go back to the sixteenth century. Some adventurous Portuguese explorers and traders who periodically passed through central and southern Malawi as they sought minerals and other resources in the interior of the region wrote these documents.\"  <a class=\"fw-bold\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/IT7NS8P7\">[Juwayeyi 2020]</a>",
            "description": null
        },
        {
            "id": 512,
            "polity": {
                "id": 237,
                "name": "ml_songhai_1",
                "long_name": "Songhai Empire",
                "start_year": 1376,
                "end_year": 1493
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": "Islamic calender.",
            "description": null
        },
        {
            "id": 513,
            "polity": {
                "id": 259,
                "name": "cn_southern_qi_dyn",
                "long_name": "Southern Qi State",
                "start_year": 479,
                "end_year": 502
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": "EMPTY_COMMENT",
            "description": null
        },
        {
            "id": 514,
            "polity": {
                "id": 380,
                "name": "th_sukhotai",
                "long_name": "Sukhotai",
                "start_year": 1238,
                "end_year": 1419
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": null,
            "description": "\"That first millennium CE Southeast Asians were also literate is suggested by Chinese emissaries who describe libraries of texts.\"§REF§(Stark 2015, 76) Miriam T Stark. Southeast Asian urbanism: from early city to Classical state. Norman Yoffee. ed. 2015. he Cambridge World History, Volume 3. Cambridge University Press. Cambridge.§REF§ Reign of King Ramkhamhaeng the Great (1276-1317): \"the most outstanding achievement was the invention of the Thai writing script, which is the basis of the modern Thai written language.\"§REF§(Dhiravegin 1985, 352) Likhit Dhiravegin. 1985. Thai Politics: Selected Aspects of Developments and Change. Tri-Sciences Publishing House.§REF§"
        },
        {
            "id": 515,
            "polity": {
                "id": 217,
                "name": "dz_tahert",
                "long_name": "Tahert",
                "start_year": 761,
                "end_year": 909
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": "Islamic calendar.",
            "description": null
        },
        {
            "id": 516,
            "polity": {
                "id": 271,
                "name": "ua_skythian_k_3",
                "long_name": "Third Scythian Kingdom",
                "start_year": -429,
                "end_year": -225
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": null,
            "description": "At this time the Greek city of Olbia was run directly by Scythian administrators.§REF§(Burstein 2010, 142) Stanley H Burstein. The Greek Cities of the Black Sea. Konrad H Kinzi. 2010. A Companion to the Classical Greek World. Wiley-Blackwell.§REF§ The administrators of the Greek city of Olbia may have used a written calendar."
        },
        {
            "id": 517,
            "polity": {
                "id": 230,
                "name": "dz_tlemcen",
                "long_name": "Tlemcen",
                "start_year": 1235,
                "end_year": 1554
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": null,
            "description": "Well-developed bureaucracy.§REF§(Bourn and Park 2016, 20) Aomar Bourn. Thomas K Park. 2016. Historical Dictionary of Morocco. Rowman &amp; Littlefield. Lantham.§REF§"
        },
        {
            "id": 518,
            "polity": {
                "id": 276,
                "name": "cn_tuyuhun",
                "long_name": "Tuyuhun",
                "start_year": 300,
                "end_year": 663
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": null,
            "description": "\"Their administration was based on the Chinese model and made use of Chinese writing.\"§REF§(Pan 1997, 45) Yihong Pan. 1997. Son of Heaven and Heavenly Qaghan: Sui-Tang China and Its Neighbors. Western Washington University.§REF§"
        },
        {
            "id": 519,
            "polity": {
                "id": 375,
                "name": "cn_viet_baiyu_k",
                "long_name": "Viet Baiyu Kingdom",
                "start_year": -332,
                "end_year": -109
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": null,
            "description": "Generic Baiyue reference: In the 3rd Century BCE \"Chinese writing had reached the area, and the many Han dynasty (206 B.C.E.-220 C.E.) tombs that soon followed bear evidence to a sedentary agriculture that succumbed easily to the great civilization from the north, supported by its written texts.\"§REF§(Faure 2007, 17-18) David Faure. 2007. Emperor and Ancestor: State and Lineage in South China. Stanford University Press. Stanford.§REF§"
        },
        {
            "id": 520,
            "polity": {
                "id": 240,
                "name": "ma_wattasid_dyn",
                "long_name": "Wattasid",
                "start_year": 1465,
                "end_year": 1554
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": "Islamic calendar.",
            "description": null
        },
        {
            "id": 521,
            "polity": {
                "id": 291,
                "name": "cn_xixia",
                "long_name": "Xixia",
                "start_year": 1032,
                "end_year": 1227
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": null,
            "description": "Xixia rulers \"relied heavily on Chinese advisers and sponsored Confucian scholars\".§REF§(? 2010, 91)&nbsp;?. The Imperial Age. Tim Cooke. ed. 2010. The New Cultural Atlas Of China. Marshall Cavendish. New York.§REF§"
        },
        {
            "id": 522,
            "polity": {
                "id": 279,
                "name": "kz_yueban",
                "long_name": "Yueban",
                "start_year": 350,
                "end_year": 450
            },
            "year_from": null,
            "year_to": null,
            "tag": "SSP",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "unknown",
            "comment": null,
            "description": "The Yueban were part of northern Xiongnu, who inhabited in the upper Hi River during the fourth and fifth centuries.\"§REF§(Li and Hansen 2003, 63) Jian Li. Valerie Hansen. 2003. The glory of the silk road: art from ancient China. The Dayton Art Institute.§REF§ \"From limited references in the Beishi (Northern histories) and the Weishu (History of the Wei), we know that the Yueban had a well-developed kingdom, with a population of two hundred thousand that spanned thousands of kilometers, in the area north of Kucha.\"§REF§(Li and Hansen 2003, 63) Jian Li. Valerie Hansen. 2003. The glory of the silk road: art from ancient China. The Dayton Art Institute.§REF§"
        },
        {
            "id": 523,
            "polity": {
                "id": 227,
                "name": "et_zagwe",
                "long_name": "Zagwe",
                "start_year": 1137,
                "end_year": 1269
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": null,
            "description": "\"The Zagwe rulers gave continuity to Aksumite state structure, Christianity, and the use of the Geez language.\"§REF§(Getahun and Kassu 2014, 9) Solomon Addis Getahun. Wudu Tafete Kassu. 2014. Culture and Customs of Ethiopia. ABC-CLIO. Santa Barbara.§REF§ \"The Amharic language developed as a court language during the Zagwe period. Several books were also translated into the Geez language. There are also Geez engravings in the walls of the churches of Lalibela.\"§REF§(Getahun and Kassu 2014, 9) Solomon Addis Getahun. Wudu Tafete Kassu. 2014. Culture and Customs of Ethiopia. ABC-CLIO. Santa Barbara.§REF§"
        },
        {
            "id": 524,
            "polity": {
                "id": 222,
                "name": "tn_zirid_dyn",
                "long_name": "Zirids",
                "start_year": 973,
                "end_year": 1148
            },
            "year_from": null,
            "year_to": null,
            "tag": "IFR",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": null,
            "description": "Centralized government bureaucracy with a wazir§REF§(Knapp 1977, 406) Wilfrid Knapp. 1977. North West Africa: A Political and Economic Survey. Oxford University Press.§REF§ while the court and the coastal city of Mahdia became \"one of the great cultural centers of medieval North Africa.\"§REF§(? 2012, 503)&nbsp;? . Tamim Ibn Al-Mu'izz Ibn Badis. Emmanuel K Akyeampong. Henry Louis Gates Jr. eds. 2012. Dictionary of African Biography: Abach - Brand, Volume 1. Oxford University Press. Oxford.§REF§ For example, \"Ibn Rashiq arrived at the Zirid court in Kairouan during the reign of the Caliph al-Mu'izz b. Badis, and soon became one of the leading men of science, letters, and religion in the court circle.\"§REF§(Knapp 1977, 406) Wilfrid Knapp. 1977. North West Africa: A Political and Economic Survey. Oxford University Press.§REF§'"
        },
        {
            "id": 525,
            "polity": {
                "id": 586,
                "name": "gb_england_norman",
                "long_name": "Norman England",
                "start_year": 1066,
                "end_year": 1153
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": "Julius Work Calendar, created around 1020 at Canterbury Cathedral, is the earliest known calendar from England  <a class=\"fw-bold\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/U7QABRDP\">[Lacey_Danziger 1999]</a>",
            "description": ""
        },
        {
            "id": 526,
            "polity": {
                "id": 798,
                "name": "de_east_francia",
                "long_name": "East Francia",
                "start_year": 842,
                "end_year": 919
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": "Fulda Monastery Liturgical Calendar:\r\nMaintained by one of the most prominent monastic centers in East Francia, it included the feast days of saints, liturgical seasons, and significant Christian holidays.  <a class=\"fw-bold\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/IQIHZGPT\">[Reuter 2012]</a>",
            "description": ""
        },
        {
            "id": 527,
            "polity": {
                "id": 177,
                "name": "tr_ottoman_emp_4",
                "long_name": "Ottoman Empire IV",
                "start_year": 1839,
                "end_year": 1922
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": "The Hijri calendar was the primary calendar used for religious purposes and much of daily life. It determined dates for Islamic rituals like Ramadan, Eid al-Fitr, and Eid al-Adha.<br>\r\nIn 1840 shortly after the accession to the throne of Sultan Abdülmecid I, as the official calendar for all civic matters and named \"Rumi calendar\" (literally Roman calendar), was adopted.  <a class=\"fw-bold\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/76BW74RF\">[webpage_Takvimlerin dönüşümü. Hicri, miladi,...]</a>",
            "description": ""
        },
        {
            "id": 528,
            "polity": {
                "id": 21,
                "name": "us_hawaii_k",
                "long_name": "Kingdom of Hawaii - Post-Kamehameha Period",
                "start_year": 1820,
                "end_year": 1898
            },
            "year_from": null,
            "year_to": null,
            "tag": "TRS",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "present",
            "comment": "After the arrival of Christian missionaries in 1820, the Gregorian calendar was introduced and became a standard written document for administrative, educational, and religious purposes.  <a class=\"fw-bold\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/QT8DN5BS\">[Daws 1997]</a>",
            "description": ""
        },
        {
            "id": 529,
            "polity": {
                "id": 126,
                "name": "pk_indo_greek_k",
                "long_name": "Indo-Greek Kingdom",
                "start_year": -180,
                "end_year": -10
            },
            "year_from": null,
            "year_to": null,
            "tag": "UND",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "uncoded",
            "comment": "Unknown. The Greek cultural world endured beyond the collapse of the successor states. Lexicography, astrological diaries, market prices and records also existed within the wider Greek world. Evidence from inscriptions indicate interaction with the wider literary traditions. This was especially true in regard to the Seleucids and later Arsacid literary traditions. There is also evidence of exposure and conversion by at least one King to Buddhism in the Indian literary tradition. However, given the scarce records of the Indo-Greeks no proof has been found to indicate indigenous literary works.   <a class=\"fw-bold\" href=\"https://www.zotero.org/groups/1051264/seshat_databank/items/XCKQ4D6E\">[Sherwin-White 1993]</a>",
            "description": null
        },
        {
            "id": 530,
            "polity": {
                "id": 49,
                "name": "id_kediri_k",
                "long_name": "Kediri Kingdom",
                "start_year": 1049,
                "end_year": 1222
            },
            "year_from": null,
            "year_to": null,
            "tag": "UND",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "uncoded",
            "comment": "Literate culture.",
            "description": null
        },
        {
            "id": 531,
            "polity": {
                "id": 420,
                "name": "cn_longshan",
                "long_name": "Longshan",
                "start_year": -3000,
                "end_year": -1900
            },
            "year_from": null,
            "year_to": null,
            "tag": "UND",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "uncoded",
            "comment": null,
            "description": "Unknown but possible, given both evidence for astronomy (\"recording time at Yao’s observatory was entrusted to the official astronomers of names Xi 羲 and He 和.”2\"§REF§(He 2013, 268)§REF§) and for writing (\"Not only did political chiefdoms, hierarchical settlements, and high shamanism begin in this period, but it may have witnessed the invention of true writing as well; many inscribed but yet to be deciphered pottery pieces have come to light (Fig. I.IO).\" §REF§(Chang 1999, 64)§REF§)"
        },
        {
            "id": 532,
            "polity": {
                "id": 50,
                "name": "id_majapahit_k",
                "long_name": "Majapahit Kingdom",
                "start_year": 1292,
                "end_year": 1518
            },
            "year_from": null,
            "year_to": null,
            "tag": "UND",
            "is_disputed": false,
            "is_uncertain": false,
            "name": "Calendar",
            "calendar": "uncoded",
            "comment": "Literate culture.",
            "description": null
        }
    ]
}