jholiday.py 文件源码

def _autumn_equinox(y):
    """???????????????????9???????????
"""
    if y <= 1947:
        d = 0
    elif y <= 1979:
        d = math.floor(
            23.2588 + 0.242194 * (y - 1980) - math.floor((y - 1980) / 4))
    elif y <= 2099:
        d = math.floor(
            23.2488 + 0.242194 * (y - 1980) - math.floor((y - 1980) / 4))
    elif y <= 2150:
        d = math.floor(
            24.2488 + 0.242194 * (y - 1980) - math.floor((y - 1980) / 4))
    else:
        d = 99

    return d