69 lines
1.7 KiB
Python
69 lines
1.7 KiB
Python
"""
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Generated by ChatGPT 3.5 (https://chatgpt.com/c/103d4f23-7c8f-484f-9598-d38187e933f2)
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"""
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from datetime import datetime, timedelta
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from ics import Calendar, Event
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def mothering_sunday(year: int) -> datetime: # pylint: disable=too-many-locals
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"""
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Calculate Mothering Sunday (UK) for a particular year
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Args:
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year (int): year to calculate Mothering Sunday
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Returns:
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datetime: datetime object for Mothering Sunday
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"""
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# Calculate Easter Sunday
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a = year % 19
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b = year // 100
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c = year % 100
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d = b // 4
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e = b % 4
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f = (b + 8) // 25
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g = (b - f + 1) // 3
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h = (19 * a + b - d - g + 15) % 30
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i = c // 4
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k = c % 4
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l = (32 + 2 * e + 2 * i - h - k) % 7
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m = (a + 11 * h + 22 * l) // 451
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month = (h + l - 7 * m + 114) // 31
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day = ((h + l - 7 * m + 114) % 31) + 1
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easter_sunday = datetime(year, month, day)
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# Calculate Mothering Sunday
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mothers_day = easter_sunday - timedelta(weeks=3)
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# Ensure Mothering Sunday falls on a Sunday
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if mothers_day.weekday() != 6: # 6 corresponds to Sunday
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mothers_day += timedelta(days=6 - mothers_day.weekday())
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return mothers_day
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def generate_ical() -> None:
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"""
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Generate an ICAL file for Mothering Sunday (UK)
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"""
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cal = Calendar()
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for year in range(datetime.now().year, datetime.now().year + 10):
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date = mothering_sunday(year)
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event = Event()
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event.name = "Mothering Sunday"
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event.begin = date
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event.make_all_day()
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cal.events.add(event)
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with open("mothering_sunday.ics", "w", encoding="utf-8") as f:
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f.write(cal.serialize())
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if __name__ == "__main__":
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generate_ical()
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