mpas_analysis.shared.timekeeping.utility.datetime_to_days

mpas_analysis.shared.timekeeping.utility.datetime_to_days(dates, calendar='gregorian', referenceDate='0001-01-01')

Given date(s), a calendar and a reference date, returns the days since the reference date, either as a single float or an array of floats.

Parameters

datetimeinstance or array-like of datetime.datetime

The date(s) to be converted to days since referenceDate on the given calendar.

calendar{‘gregorian’, ‘gregorian_noleap’}, optional

A calendar to be used to convert days to a datetime.datetime object.

referenceDatestr, optional

A reference date of the form:

0001-01-01
0001-01-01 00:00:00

Returns

daysfloat or array of floats

The days since referenceDate on the given calendar.

Raises

ValueError

If an invalid datetimes, referenceDate or calendar is supplied.