some new features

.venv/lib/python3.12/site-packages/holidays/countries/chad.py

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+#  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 <dr.prodigy.github@gmail.com> (c) 2017-2023
+#           ryanss <ryanssdev@icloud.com> (c) 2014-2017
+#  Website: https://github.com/vacanza/holidays
+#  License: MIT (see LICENSE file)
+
+from holidays.calendars import _CustomIslamicHolidays
+from holidays.calendars.gregorian import JAN, APR, MAY, JUN, JUL, AUG, SEP, OCT, NOV, DEC
+from holidays.groups import (
+    ChristianHolidays,
+    InternationalHolidays,
+    IslamicHolidays,
+    StaticHolidays,
+)
+from holidays.observed_holiday_base import ObservedHolidayBase, SUN_TO_NEXT_MON
+
+
+class Chad(
+    ObservedHolidayBase, ChristianHolidays, InternationalHolidays, IslamicHolidays, StaticHolidays
+):
+    """Chad holidays.
+
+    References:
+        * <https://en.wikipedia.org/wiki/Public_holidays_in_Chad>
+        * <https://web.archive.org/web/20240619220557/https://www.ilo.org/dyn/natlex/docs/ELECTRONIC/97323/115433/F-316075167/TCD-97323.pdf>
+    """
+
+    country = "TD"
+    observed_label = "%s (observed)"
+    # On 11 August 1960, Chad gained independence from France.
+    start_year = 1961
+
+    def __init__(self, *args, islamic_show_estimated: bool = True, **kwargs):
+        """
+        Args:
+            islamic_show_estimated:
+                Whether to add "estimated" label to Islamic holidays name
+                if holiday date is estimated.
+        """
+        ChristianHolidays.__init__(self)
+        InternationalHolidays.__init__(self)
+        IslamicHolidays.__init__(
+            self, cls=ChadIslamicHolidays, show_estimated=islamic_show_estimated
+        )
+        StaticHolidays.__init__(self, ChadStaticHolidays)
+        kwargs.setdefault("observed_rule", SUN_TO_NEXT_MON)
+        super().__init__(*args, **kwargs)
+
+    def _populate_public_holidays(self):
+        # New Year's Day.
+        self._add_observed(self._add_new_years_day("New Year's Day"))
+
+        # International Women's Day.
+        self._add_observed(self._add_womens_day("International Women's Day"))
+
+        # Easter Monday.
+        self._add_easter_monday("Easter Monday")
+
+        # Labour Day.
+        self._add_observed(self._add_labor_day("Labour Day"))
+
+        # Independence Day.
+        self._add_observed(self._add_holiday_aug_11("Independence Day"))
+
+        # All Saints' Day.
+        self._add_all_saints_day("All Saints' Day")
+
+        # Republic Day.
+        self._add_observed(self._add_holiday_nov_28("Republic Day"))
+
+        if self._year >= 1991:
+            # Freedom and Democracy Day.
+            self._add_observed(self._add_holiday_dec_1("Freedom and Democracy Day"))
+
+        # Christmas Day.
+        self._add_christmas_day("Christmas Day")
+
+        # Eid al-Fitr.
+        self._add_eid_al_fitr_day("Eid al-Fitr")
+
+        # Eid al-Adha.
+        self._add_eid_al_adha_day("Eid al-Adha")
+
+        # Mawlid.
+        self._add_mawlid_day("Mawlid")
+
+
+class TD(Chad):
+    pass
+
+
+class TCD(Chad):
+    pass
+
+
+class ChadIslamicHolidays(_CustomIslamicHolidays):
+    EID_AL_ADHA_DATES = {
+        2015: (SEP, 24),
+        2016: (SEP, 13),
+        2017: (SEP, 2),
+        2018: (AUG, 22),
+        2019: (AUG, 11),
+        2020: (JUL, 31),
+        2021: (JUL, 20),
+        2022: (JUL, 9),
+        2023: (JUN, 28),
+    }
+
+    EID_AL_FITR_DATES = {
+        2015: (JUL, 18),
+        2016: (JUL, 7),
+        2017: (JUN, 26),
+        2018: (JUN, 15),
+        2019: (JUN, 4),
+        2020: (MAY, 24),
+        2021: (MAY, 13),
+        2022: (MAY, 2),
+        2023: (APR, 21),
+        2024: (APR, 10),
+    }
+
+    MAWLID_DATES = {
+        2015: ((JAN, 3), (DEC, 24)),
+        2016: (DEC, 12),
+        2017: (DEC, 1),
+        2018: (NOV, 21),
+        2019: (NOV, 9),
+        2020: (OCT, 29),
+        2021: (OCT, 18),
+        2022: (OCT, 8),
+    }
+
+
+class ChadStaticHolidays:
+    special_public_holidays = {
+        2021: (APR, 23, "Funeral of Idriss Déby Itno"),
+    }