Date

Functions for dates

roundTime([dt, roundTo])	Round a datetime object to any time laps in seconds
add_timedelta_sweeptimes(sweep_times, lag)	Add a lagtime to a list of dates.
months_between(date1, date2)	Return the number of months between date1 and date2
last_day_of_month(date)	Return the number of days in the month
from_to(tstart, tend, tdelta[, xformat])	Return a list of timesteps from <tstart> to <tend> of length <tdelta>
json_serial(obj)	JSON serializer for objects not serializable by default json code extended from here: https://stackoverflow.com/questions/11875770/how-to-overcome-datetime-datetime-not-json-serializable-in-python
DateTimeEncoder(*[, skipkeys, ensure_ascii, ...])	Class for JSON encodings of datetimes.
time_mhd(inp)	Return the timestep as string for the given int in seconds
doy(Y[, M, D])	Given year, month, day return day of year Astronomical Algorithms, Jean Meeus, 2d ed, 1998, chap 7
ymd(Y, N)	Given year = Y and day of year = N, return year, month, day Astronomical Algorithms, Jean Meeus, 2d ed, 1998, chap 7
woy(time_curr[, year])	Given a datetime or a list with doy and year, lookup the week of the year
full_steps_timediff(d1, d2)	Calculate the timesteps in weeks, months and days between 2 dates.
calc_period(ss, se)	Return two list with months (seasons) such that ss is the beginning of the first season and se the end of the first season.
is_leap_year(year)	If year is a leap year return True else return False