final

scripts/00_dyear_to_date.py

@@ -0,0 +1,32 @@
+from datetime import datetime, timedelta
+
+def decimal_year_to_date(decimal_year):
+    """
+    Converts a decimal year (e.g., 2024.5) to a datetime object.
+    """
+    year = int(decimal_year)
+    fractional_year = decimal_year - year
+
+    # Determine if it's a leap year to get the correct number of days
+    is_leap_year = (year % 4 == 0 and year % 100 != 0) or (year % 400 == 0)
+    days_in_year = 366 if is_leap_year else 365
+
+    # Calculate the day of the year (1-indexed)
+    day_of_year = int(fractional_year * days_in_year) + 1
+
+    # Create a datetime object for January 1st of the given year
+    start_of_year = datetime(year, 1, 1)
+
+    # Add the calculated number of days to get the final date
+    result_date = start_of_year + timedelta(days=day_of_year - 1)
+
+    return result_date
+
+# Example usage:
+decimal_year_example = 2020.9181
+date_result = decimal_year_to_date(decimal_year_example)
+print(f"Decimal year {decimal_year_example} converts to: {date_result}")
+
+decimal_year_example_2 = 2021.8271
+date_result_2 = decimal_year_to_date(decimal_year_example_2)
+print(f"Decimal year {decimal_year_example_2} converts to: {date_result_2}")