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"Aw man, Tray, look up at the sky. It's a full moon. On the Sabbath." -Werewolf Bar Mitzvah
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from datetime import date, timedelta | |
# http://www.voidware.com/moon_phase.htm | |
def moon_phase(y, m, d): | |
""" | |
0 => new moon | |
1 => waxing crescent | |
2 => first quarter | |
3 => waxing gibbous | |
4 => full moon | |
5 => waning gibbous | |
6 => third quarter | |
7 => waning crescent | |
""" | |
if m < 3: | |
y -= 1 | |
m += 12 | |
m += 1 | |
c = 365.25 * y | |
e = 30.6 * m | |
jd = c + e + d - 694039.09 | |
jd /= 29.53 | |
b = int(jd) | |
jd -= b | |
b = jd * 8 + 0.5 | |
b = int(b) & 7 | |
return b | |
today = date(2024, 1, 1) | |
friday = today + timedelta((4 - today.weekday()) % 7) | |
for i in range(52*4): | |
phase = moon_phase(friday.year, friday.month, friday.day) | |
if phase == 4: | |
print(friday) | |
friday += timedelta(weeks=1) |
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