113 lines
3.2 KiB
Python
113 lines
3.2 KiB
Python
# holidays
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# --------
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# A fast, efficient Python library for generating country, province and state
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# specific sets of holidays on the fly. It aims to make determining whether a
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# specific date is a holiday as fast and flexible as possible.
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#
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# Authors: Vacanza Team and individual contributors (see CONTRIBUTORS file)
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# dr-prodigy <dr.prodigy.github@gmail.com> (c) 2017-2023
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# ryanss <ryanssdev@icloud.com> (c) 2014-2017
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# Website: https://github.com/vacanza/holidays
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# License: MIT (see LICENSE file)
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from datetime import date
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from typing import Optional
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from holidays.calendars.gregorian import MAR, APR
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NYEPI = "NYEPI"
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class _BalineseSakaLunar:
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"""
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Balinese Saka lunar calendar.
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The Balinese saka calendar is one of two calendars used on the Indonesian island
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of Bali. Unlike the 210-day pawukon calendar, it is based on the phases of the Moon,
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and is approximately the same length as the tropical year (solar year, Gregorian year).
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https://en.wikipedia.org/wiki/Balinese_saka_calendar
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"""
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NYEPI_DATES = {
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1983: (MAR, 15),
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1984: (MAR, 4),
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1985: (MAR, 22),
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1986: (MAR, 12),
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1987: (MAR, 31),
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1988: (MAR, 19),
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1989: (MAR, 9),
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1990: (MAR, 27),
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1991: (MAR, 17),
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1992: (MAR, 5),
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1993: (MAR, 24),
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1994: (MAR, 12),
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1995: (APR, 1),
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1996: (MAR, 21),
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1997: (APR, 9),
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1998: (MAR, 29),
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1999: (MAR, 18),
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2000: (APR, 4),
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2001: (MAR, 25),
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2002: (APR, 13),
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2003: (APR, 2),
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2004: (MAR, 22),
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2005: (MAR, 11),
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2006: (MAR, 30),
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2007: (MAR, 19),
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2008: (MAR, 7),
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2009: (MAR, 26),
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2010: (MAR, 16),
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2011: (MAR, 5),
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2012: (MAR, 23),
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2013: (MAR, 12),
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2014: (MAR, 31),
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2015: (MAR, 21),
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2016: (MAR, 9),
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2017: (MAR, 28),
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2018: (MAR, 17),
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2019: (MAR, 7),
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2020: (MAR, 25),
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2021: (MAR, 14),
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2022: (MAR, 3),
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2023: (MAR, 22),
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2024: (MAR, 11),
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2025: (MAR, 29),
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2026: (MAR, 19),
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2027: (MAR, 8),
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2028: (MAR, 26),
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2029: (MAR, 15),
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2030: (MAR, 5),
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2031: (MAR, 24),
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2032: (MAR, 12),
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2033: (MAR, 31),
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2034: (MAR, 20),
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2035: (MAR, 10),
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2036: (MAR, 28),
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2037: (MAR, 17),
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2038: (MAR, 6),
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2039: (MAR, 25),
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2040: (MAR, 14),
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2041: (MAR, 3),
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2042: (MAR, 22),
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2043: (MAR, 11),
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2044: (MAR, 29),
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2045: (MAR, 19),
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2046: (MAR, 8),
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2047: (MAR, 27),
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2048: (MAR, 15),
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2049: (MAR, 5),
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2050: (MAR, 24),
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}
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def _get_holiday(self, holiday: str, year: int) -> Optional[date]:
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dt = getattr(self, f"{holiday}_DATES", {}).get(year, ())
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return date(year, *dt) if dt else None
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def nyepi_date(self, year: int) -> Optional[date]:
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"""
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Data References:
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* [1983-2025](https://id.wikipedia.org/wiki/Indonesia_dalam_tahun_1983)
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* [2020-2050](https://web.archive.org/web/20240718011857/https://www.balitrips.com/balinese-temples-ceremony)
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"""
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return self._get_holiday(NYEPI, year)
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