chaosmagpy.data_utils.dyear_to_mjd

chaosmagpy.data_utils.dyear_to_mjd(time, leap_year=None)[source]

Convert time from decimal years to modified Julian date 2000.

Leap years are accounted for by default.

Parameters:
timefloat, ndarray, shape (…)

Time in decimal years.

leap_year{True, False}, optional

Take leap years into account by using a conversion factor of 365 or 366 days in a year (leap year, used by default). If False a conversion factor of 365.25 days in a year is used.

Returns:
timendarray, shape (…)

Time in modified Julian date 2000.

Examples

>>> dyear_to_mjd([2000.5, 2001.5])  # account for leap years
    array([183. , 548.5])

>>> dyear_to_mjd([2000.5, 2001.5], leap_year=False)
    array([182.625, 547.875])