From 0e4f03bc97370bcbb7f851327a714ecc09d2c2a1 Mon Sep 17 00:00:00 2001
From: yashwanth2307 <billapatiyashwanthreddy@gmail.com>
Date: Tue, 8 Apr 2025 15:18:15 +0530
Subject: [PATCH] Create gambia.py

---
 holidays/countries/gambia.py | 90 ++++++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 holidays/countries/gambia.py

diff --git a/holidays/countries/gambia.py b/holidays/countries/gambia.py
new file mode 100644
index 000000000..606c776bd
--- /dev/null
+++ b/holidays/countries/gambia.py
@@ -0,0 +1,90 @@
+from datetime import date
+import holidays
+from hijri_converter import Gregorian
+
+def get_gambia_holidays(year):
+    gambia_holidays = {}
+    try:
+        gm_holidays = holidays.GM(years=year)
+        gambia_holidays.update(gm_holidays)
+    except KeyError:
+        gambia_holidays.update(_get_manual_gambia_holidays(year))
+    except Exception as e:
+        print(f"Error retrieving holidays for {year}: {e}")
+        gambia_holidays.update(_get_manual_gambia_holidays(year))
+    return gambia_holidays
+
+def _get_manual_gambia_holidays(year):
+    manual_holidays = {}
+    manual_holidays[date(year, 1, 1)] = "New Year's Day"
+    manual_holidays[date(year, 2, 18)] = "Independence Day"
+    manual_holidays[date(year, 5, 1)] = "Labour Day"
+    manual_holidays[date(year, 5, 25)] = "Africa Day"
+    manual_holidays[date(year, 7, 22)] = "Revolution Day"
+    manual_holidays[date(year, 8, 15)] = "Assumption of Mary"
+    manual_holidays[date(year, 12, 25)] = "Christmas Day"
+
+    # Calculate approximate Christian movable holidays (simplified)
+    easter_sunday = _calculate_easter(year)
+    if easter_sunday:
+        manual_holidays[easter_sunday - timedelta(days=2)] = "Good Friday (Approximate)"
+        manual_holidays[easter_sunday + timedelta(days=1)] = "Easter Monday (Approximate)"
+
+    # Calculate approximate Islamic holidays (using hijri-converter)
+    try:
+        if year >= 2000:
+            # Approximate dates based on common patterns and estimations
+            # Note: Actual dates depend on moon sighting.
+            hijri_year_start = Gregorian(year, 1, 1).to_hijri().year
+            # Eid al-Fitr (end of Ramadan) - roughly 9th/10th month
+            gregorian_eid_fitr = Gregorian(hijri_year_start + (year - 2000), 10, 1).to_gregorian()
+            manual_holidays[gregorian_eid_fitr] = "Eid al-Fitr (Approximate)"
+
+            # Eid al-Adha (Feast of Sacrifice) - roughly 12th month, 10th day
+            gregorian_eid_adha = Gregorian(hijri_year_start + (year - 2000), 12, 10).to_gregorian()
+            manual_holidays[gregorian_eid_adha] = "Eid al-Adha (Approximate)"
+
+            # Mawlid (Prophet's Birthday) - roughly 3rd month, 12th day
+            gregorian_mawlid = Gregorian(hijri_year_start + (year - 2000), 3, 12).to_gregorian()
+            manual_holidays[gregorian_mawlid] = "The Prophet's Birthday (Approximate)"
+    except Exception as e:
+        print(f"Error calculating Islamic holidays for {year}: {e}")
+
+    return manual_holidays
+
+def _calculate_easter(year):
+    """Simplified Easter calculation (Gregorian calendar)."""
+    a = year % 19
+    b = year // 100
+    c = year % 100
+    d = (19 * a + b - b // 4 - (b - (b + 8) // 25 + 1) // 3 + 15) % 30
+    e = (32 + 2 * (b % 4) + 2 * (c // 4) - d - (c % 4)) % 7
+    month = (d + e + 114) // 31
+    day = ((d + e + 114) % 31) + 1
+    try:
+        return date(year, month, day)
+    except ValueError:
+        return None
+
+if __name__ == "__main__":
+    from datetime import timedelta
+
+    start_year = 2025
+    end_year = start_year + 30
+    all_gambia_holidays = {}
+
+    for year in range(start_year, end_year):
+        gambia_holidays = get_gambia_holidays(year)
+        if gambia_holidays:
+            print(f"\nPublic Holidays in The Gambia for {year}:")
+            for date_obj, name in sorted(gambia_holidays.items()):
+                print(f"{date_obj}: {name}")
+            all_gambia_holidays.update(gambia_holidays)
+        else:
+            print(f"\nCould not retrieve specific holiday data for {year}.")
+
+    print("\n--- Important Notes ---")
+    print("1. The 'holidays' library may not fully support Gambia for all years.")
+    print("2. Dates for Islamic holidays are subject to moon sighting and can vary by a day or two.")
+    print("3. Dates for Christian movable holidays (Good Friday, Easter Monday) are approximate calculations.")
+    print("4. For precise dates, especially for religious holidays, consult official Gambian government announcements and reliable religious calendars for each specific year.")
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