def is_since(y, sy, m=1, d=1, sm=1, sd=1):
    '\n    tests whether a date is on or since another date\n\n    Parameters\n    ----------\n    y : int\n      the year to be tested\n    sy : int\n      the since year\n    m : int or str\n      the month to be tested. Optional, defaults to Jan\n    d : int\n      the day to be tested.  Defaults to 1\n    sm : int or str\n      the since month.  Optional, defaults to Jan\n    sd: int\n      the since day.  Optional, defaults to 1\n\n    Returns\n    -------\n    True if the target date is the same as, or more recent than, the since date\n\n    '
    s = '{}/{}/{}'.format(sd, month_to_int(sm), sy)
    d = '{}/{}/{}'.format(d, month_to_int(m), y)
    since = time.mktime(datetime.strptime(s, '%d/%m/%Y').timetuple())
    date = time.mktime(datetime.strptime(d, '%d/%m/%Y').timetuple())
    return (since <= date)
tests whether a date is on or since another date

Parameters
----------
y : int
  the year to be tested
sy : int
  the since year
m : int or str
  the month to be tested. Optional, defaults to Jan
d : int
  the day to be tested.  Defaults to 1
sm : int or str
  the since month.  Optional, defaults to Jan
sd: int
  the since day.  Optional, defaults to 1

Returns
-------
True if the target date is the same as, or more recent than, the since date
def is_since(y, sy, m=1, d=1, sm=1, sd=1):
    '\n    tests whether a date is on or since another date\n\n    Parameters\n    ----------\n    y : int\n      the year to be tested\n    sy : int\n      the since year\n    m : int or str\n      the month to be tested. Optional, defaults to Jan\n    d : int\n      the day to be tested.  Defaults to 1\n    sm : int or str\n      the since month.  Optional, defaults to Jan\n    sd: int\n      the since day.  Optional, defaults to 1\n\n    Returns\n    -------\n    True if the target date is the same as, or more recent than, the since date\n\n    '
    s = '{}/{}/{}'.format(sd, month_to_int(sm), sy)
    d = '{}/{}/{}'.format(d, month_to_int(m), y)
    since = time.mktime(datetime.strptime(s, '%d/%m/%Y').timetuple())
    date = time.mktime(datetime.strptime(d, '%d/%m/%Y').timetuple())
    return (since <= date)