pyacs.lib.astrotime.year2yr

Convert 4-digit year to 2-digit year.

pyacs.lib.astrotime.year2yr.year2yr(year)

Convert 4-digit year to 2-digit year.

Parameters:

year (int or array-like) – 4-digit year (e.g. 2001).

Returns:

2-digit year (e.g. 01). year-2000 if year>1999, else year-1900.

Return type:

int or ndarray

Notes

Heritage from geodesy convention (GPS in 1980). See examples.

Examples

>>> import pyacs
>>> pyacs.year2yr(1996)
>>> 96
>>> pyacs.year2yr(2011)
>>> 11