debunking_that_once_every_834_years_bullshit.py

"""
A standalone Python script to utterly refute some wide-circulation bullshit that is currently softening many minds.
"""

import datetime

i = 1900
j = 2100

valid = []

while i < j:
    dates = [datetime.date(i, 10, d + 1) for d in range(31)]

    fridays = len([d for d in dates if d.weekday() == 4]) > 4
    saturdays = len([d for d in dates if d.weekday() == 5]) > 4
    sundays = len([d for d in dates if d.weekday() == 6]) > 4

    if fridays and saturdays and sundays:
        valid.append(i)

    i = i + 1

print(valid)

# returns [1909, 1915, 1920, 1926, 1937, 1943, 1948, 1954, 1965, 1971, 1976, 1982, 1993, 1999, 2004, 2010, 2021, 2027, 2032, 2038, 2049, 2055, 2060, 2066, 2077, 2083, 2088, 2094]