# holidays # -------- # A fast, efficient Python library for generating country, province and state # specific sets of holidays on the fly. It aims to make determining whether a # specific date is a holiday as fast and flexible as possible. # # Authors: Vacanza Team and individual contributors (see CONTRIBUTORS file) # dr-prodigy (c) 2017-2023 # ryanss (c) 2014-2017 # Website: https://github.com/vacanza/holidays # License: MIT (see LICENSE file) from gettext import gettext as tr from holidays.calendars import _CustomHinduHolidays, _CustomIslamicHolidays from holidays.calendars.gregorian import ( JAN, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP, OCT, NOV, DEC, _timedelta, ) from holidays.constants import BANK, GOVERNMENT, PUBLIC, WORKDAY from holidays.groups import ( ChristianHolidays, HinduCalendarHolidays, InternationalHolidays, IslamicHolidays, SinhalaCalendarHolidays, StaticHolidays, ) from holidays.holiday_base import HolidayBase class SriLanka( HolidayBase, ChristianHolidays, HinduCalendarHolidays, InternationalHolidays, IslamicHolidays, SinhalaCalendarHolidays, StaticHolidays, ): """Sri Lanka holidays. References: * [No. 29 of 1971 (Holidays Act)](http://www.commonlii.org/lk/legis/num_act/ha29o1971152) * [No. 21 of 1991 (Amendment)](http://www.commonlii.org/lk/legis/num_act/ha21o1991232) * * * Cross-Checked With: * * * * * * * * * * * * * * * """ country = "LK" supported_categories = (BANK, GOVERNMENT, PUBLIC, WORKDAY) default_language = "si_LK" # %s (estimated). estimated_label = tr("%s (අනුමානිත)") supported_languages = ("en_US", "si_LK", "ta_LK") # Sri Lanka's Holidays Act (No. 29 of 1971) was first proclaimed on SEP 2nd, 1971 # but the earliest citable calendar online is from 2003. # As there's no source for future Poya dates, end year is capped at 2025. start_year = 1972 end_year = 2025 def __init__(self, islamic_show_estimated: bool = True, *args, **kwargs): """ Args: islamic_show_estimated: Whether to add "estimated" label to Islamic holidays name if holiday date is estimated. """ ChristianHolidays.__init__(self) HinduCalendarHolidays.__init__(self, SriLankaHinduHolidays) InternationalHolidays.__init__(self) IslamicHolidays.__init__( self, cls=SriLankaIslamicHolidays, show_estimated=islamic_show_estimated ) SinhalaCalendarHolidays.__init__(self) StaticHolidays.__init__(self, cls=SriLankaStaticHolidays) super().__init__(*args, **kwargs) def _populate_public_holidays(self): # Non-Sectarian Holidays. # Tamil Thai Pongal Day. name = tr("දෙමළ තෛපොංැලල් දිනය") thai_pongal_years_jan_14 = { 2005, 2006, 2009, 2010, 2013, 2014, 2017, 2018, 2021, 2022, 2025, } if self._year in thai_pongal_years_jan_14: self._add_holiday_jan_14(name) else: self._add_holiday_jan_15(name) # Independence Day. self._add_holiday_feb_4(tr("නිදහස් සමරු දිනය")) # Sinhala and Tamil New Year. name = tr("සිංහල හා දෙමළ අලුත් අවුරුදු දිනය") aluth_avurudda_years_apr_13 = { 2004, 2008, 2012, # 2016 is on APR, 14. 2020, 2024, } if self._year in aluth_avurudda_years_apr_13: dt = self._add_holiday_apr_13(name) else: dt = self._add_holiday_apr_14(name) # Day Before Sinhala and Tamil New Year. self._add_holiday(tr("සිංහල හා දෙමළ අලුත් අවුරුදු දිනට පෙර දිනය"), _timedelta(dt, -1)) # International Workers' Day. self._add_labor_day(tr("ලොක කම්කරු දිනය")) # Hindu Holidays. maha_sivarathri_dates = { # The one used in Sri Lanka isn't an exact match with India, used with caution. 2003: (MAR, 1), 2004: (FEB, 18), 2005: (MAR, 8), 2006: (FEB, 26), 2007: (FEB, 16), 2008: (MAR, 6), 2009: (FEB, 23), 2010: (MAR, 13), 2011: (MAR, 2), 2012: (FEB, 20), 2013: (MAR, 10), 2014: (FEB, 27), 2015: (FEB, 17), 2016: (MAR, 7), 2017: (FEB, 24), 2018: (FEB, 13), 2019: (MAR, 4), 2020: (FEB, 21), 2021: (MAR, 11), 2022: (MAR, 1), 2023: (FEB, 18), 2024: (MAR, 8), 2025: (FEB, 26), } maha_sivarathri_date = maha_sivarathri_dates.get(self._year) if maha_sivarathri_date: # Maha Sivarathri Day. self._add_holiday(tr("මහ සිවරාත්රි දිනය"), maha_sivarathri_date) # Deepavali was a working day in 2003. if self._year >= 2004: # Deepavali Festival Day. self._add_diwali(tr("දීපවාලි උත්සව දිනය")) # Christian Holidays. # Good Friday. self._add_good_friday(tr("මහ සිකුරාදා දිනය")) # Christmas Day. self._add_christmas_day(tr("නත්තල් උත්සව දිනය")) # Poya Holidays. # All Adhi Poya Holidays will instead be added in StaticHolidays. # Duruthu Full Moon Poya Day. self._add_duruthu_poya(tr("දුරුතු පුර පසළොස්වක පෝය දිනය")) # Nawam Full Moon Poya Day. self._add_nawam_poya(tr("නවම් පුර පසළොස්වක පෝය දිනය")) # Medin Full Moon Poya Day. self._add_medin_poya(tr("මැදින් පුර පසළොස්වක පෝය දිනය")) # Bak Full Moon Poya Day. self._add_bak_poya(tr("බක් පුර පසළොස්වක පෝය දිනය")) # Vesak Full Moon Poya Day. dt = self._add_vesak_poya(tr("වෙසක් පුර පසළොස්වක පෝය දිනය")) if self._year >= 2003: # Day Following Vesak Full Moon Poya Day. self._add_holiday(tr("වෙසක් පුර පසළොස්වක පෝය දිනට පසු දිනය"), _timedelta(dt, +1)) # Poson Full Moon Poya Day. self._add_poson_poya(tr("පොසොන් පුර පසළොස්වක පෝය දිනය")) # Esala Full Moon Poya Day. self._add_esala_poya(tr("ඇසල පුර පසළොස්වක පෝය දිනය")) # Nikini Full Moon Poya Day. self._add_nikini_poya(tr("නිකිණි පුර පසළොස්වක පෝය දිනය")) # Binara Full Moon Poya Day. self._add_binara_poya(tr("බිනර පුර පසළොස්වක පෝය දිනය")) # Vap Full Moon Poya Day. self._add_vap_poya(tr("වප් පුර පසළොස්වක පෝය දිනය")) # Il Full Moon Poya Day. self._add_il_poya(tr("ඉල් පුර පසළොස්වක පෝය දිනය")) # Unduvap Full Moon Poya Day. self._add_unduvap_poya(tr("උඳුවප් පුර පසළොස්වක පෝය දිනය")) # Islamic Holidays. # Eid al-Fitr. self._add_eid_al_fitr_day(tr("ඊදුල් ෆීතර්")) # Eid al-Adha. self._add_eid_al_adha_day(tr("ඊදුල් අල්හා")) # Prophet's Birthday. self._add_mawlid_day(tr("නබි නායකතුමාගේ උපන් දිනය")) class LK(SriLanka): pass class LKA(SriLanka): pass class SriLankaHinduHolidays(_CustomHinduHolidays): DIWALI_DATES = { 2003: (OCT, 24), 2004: (NOV, 11), 2005: (NOV, 1), 2006: (OCT, 21), 2007: (NOV, 8), 2008: (OCT, 27), 2009: (OCT, 17), 2010: (NOV, 5), 2011: (OCT, 26), 2012: (NOV, 13), 2013: (NOV, 2), 2014: (OCT, 22), 2015: (NOV, 10), 2016: (OCT, 29), 2017: (OCT, 18), 2018: (NOV, 6), 2019: (OCT, 27), 2020: (NOV, 14), 2021: (NOV, 4), 2022: (OCT, 24), 2023: (NOV, 12), 2024: (OCT, 31), 2025: (OCT, 20), } class SriLankaIslamicHolidays(_CustomIslamicHolidays): EID_AL_ADHA_DATES = { 2003: (FEB, 12), 2004: (FEB, 1), 2005: (JAN, 21), 2006: ((JAN, 11), (DEC, 31)), 2007: (DEC, 21), 2008: (DEC, 9), 2009: (NOV, 28), 2010: (NOV, 17), # https://www.adaderana.lk/news.php?nid=15606 2011: (NOV, 7), # https://www.adaderana.lk/news.php?nid=20136 2012: (OCT, 27), 2013: (OCT, 16), 2014: (OCT, 5), 2015: (SEP, 24), 2016: (SEP, 12), 2017: (SEP, 1), 2018: (AUG, 22), 2019: (AUG, 12), 2020: (AUG, 1), 2021: (JUL, 21), 2022: (JUL, 10), 2023: (JUN, 29), 2024: (JUN, 17), 2025: (JUN, 7), } EID_AL_FITR_DATES = { 2003: (NOV, 26), 2004: (NOV, 14), 2005: (NOV, 4), 2006: (OCT, 24), 2007: (OCT, 13), 2008: (OCT, 1), 2009: (SEP, 21), 2010: (SEP, 10), 2011: (AUG, 31), 2012: (AUG, 19), 2013: (AUG, 9), 2014: (JUL, 29), 2015: (JUL, 18), 2016: (JUL, 6), 2017: (JUN, 26), 2018: (JUN, 15), 2019: (JUN, 5), 2020: (MAY, 25), 2021: (MAY, 14), 2022: (MAY, 3), 2023: (APR, 22), 2024: (APR, 11), 2025: (MAR, 31), } MAWLID_DATES = { 2003: (MAY, 14), 2004: (MAY, 2), 2005: (APR, 22), 2006: (APR, 11), 2007: (APR, 1), 2008: (MAR, 20), 2009: (MAR, 10), 2010: (FEB, 27), 2011: (FEB, 16), 2012: (FEB, 5), 2013: (JAN, 25), 2014: (JAN, 14), # Technically 2015 has both JAN 5 and DEC 24 # but this is only observed for JAN 4. 2015: (JAN, 4), 2016: (DEC, 12), 2017: (DEC, 1), 2018: (NOV, 20), 2019: (NOV, 10), 2020: (OCT, 30), 2021: (OCT, 19), 2022: (OCT, 9), 2023: (SEP, 28), 2024: (SEP, 16), 2025: (SEP, 5), } class SriLankaStaticHolidays: """Sri Lanka special holdays. References: * * * * * * * * * * * * * * * * * """ # Adhi Binara Full Moon Poya Day. adhi_binara_poya_name = tr("අධි බිනර පුර පසළොස්වක පෝය දිනය") # Adhi Esala Full Moon Poya Day. adhi_esala_poya_name = tr("අධි ඇසල පුර පසළොස්වක පෝය දිනය") # Adhi Poson Full Moon Poya Day. adhi_poson_poya_name = tr("අධි පොසොන් පුර පසළොස්වක පෝය දිනය") # Adhi Vap Full Moon Poya Day. adhi_vap_poya_name = tr("අධි වප් පුර පසළොස්වක පෝය දිනය") # Adhi Vesak Full Mon Poya Day. adhi_vesak_poya_name = tr("අධි වෙසක් පුර පසළොස්වක පෝය දිනය") # Half-Day Special Bank Holiday. half_day_special_bank_holiday_name = tr("දින භාගයක විශේෂ බැංකු නිවාඩු දිනය") # Public Sector Holiday. public_sector_holiday_name = tr("රාජ්ය අංශයේ නිවාඩු දිනය") # Special Bank Holiday. special_bank_holiday_name = tr("විශේෂ බැංකු නිවාඩු දිනය") # Special Public Holiday. special_public_holiday_name = tr("විශේෂ රජයේ නිවාඩු දිනය") special_bank_holidays = { 2005: ( (MAY, 2, special_bank_holiday_name), (DEC, 26, special_bank_holiday_name), ), 2007: ( (FEB, 5, special_bank_holiday_name), (APR, 3, special_bank_holiday_name), ), 2008: (APR, 18, special_bank_holiday_name), 2011: ( (MAY, 2, special_bank_holiday_name), (DEC, 26, special_bank_holiday_name), ), 2012: ( (JAN, 16, special_bank_holiday_name), (FEB, 10, special_bank_holiday_name), (MAY, 7, special_bank_holiday_name), ), 2013: (APR, 15, special_bank_holiday_name), 2014: (APR, 15, special_bank_holiday_name), 2015: (JAN, 5, special_bank_holiday_name), 2016: ( (MAY, 2, special_bank_holiday_name), (MAY, 23, special_bank_holiday_name), (DEC, 26, special_bank_holiday_name), ), 2018: ( (JAN, 15, special_bank_holiday_name), (FEB, 5, special_bank_holiday_name), ), 2019: ( (APR, 15, special_bank_holiday_name), # MAY 20 got upgraded to Special Public Holiday. (NOV, 11, special_bank_holiday_name), ), 2020: (APR, 14, special_bank_holiday_name), 2021: ( (APR, 30, half_day_special_bank_holiday_name), (DEC, 24, half_day_special_bank_holiday_name), ), 2022: ( # MAY 2 got upgraded to Special Public Holiday. (OCT, 10, special_bank_holiday_name), (DEC, 26, special_bank_holiday_name), ), 2023: (JAN, 16, special_bank_holiday_name), 2025: (APR, 15, special_bank_holiday_name), } special_government_holidays = { 2020: (JUN, 4, public_sector_holiday_name), 2022: ( (JUN, 13, public_sector_holiday_name), # All Friday between JUN 15, 2022 to AUG 2, 2022. (JUN, 17, public_sector_holiday_name), (JUN, 24, public_sector_holiday_name), (JUL, 1, public_sector_holiday_name), (JUL, 8, public_sector_holiday_name), (JUL, 15, public_sector_holiday_name), (JUL, 22, public_sector_holiday_name), (JUL, 29, public_sector_holiday_name), ), } special_public_holidays = { 2004: (JUL, 31, adhi_esala_poya_name), 2007: (MAY, 31, adhi_poson_poya_name), 2010: (APR, 28, adhi_vesak_poya_name), # 2011, MAY 2 confirmed as not getting upgrade to Special Public Holiday. 2012: ( (MAY, 7, special_public_holiday_name), (AUG, 31, adhi_binara_poya_name), ), 2013: (APR, 15, special_public_holiday_name), 2015: (JUL, 1, adhi_esala_poya_name), 2016: (APR, 15, special_public_holiday_name), 2018: (MAY, 29, adhi_poson_poya_name), 2019: (MAY, 20, special_public_holiday_name), 2020: ( (MAR, 16, special_public_holiday_name), (MAR, 17, special_public_holiday_name), (MAR, 18, special_public_holiday_name), (MAR, 19, special_public_holiday_name), (OCT, 1, adhi_vap_poya_name), ), 2022: ( (APR, 11, special_public_holiday_name), (APR, 12, special_public_holiday_name), (MAY, 2, special_public_holiday_name), ), 2023: (JUL, 3, adhi_esala_poya_name), 2024: ( (APR, 15, special_public_holiday_name), (SEP, 29, special_public_holiday_name), ), } special_workday_holidays = { 2003: (OCT, 24, tr("දීපවාලි උත්සව දිනය")), # Deepavali Festival Day. }