Man page - ms_doy2md(3)

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Package: libmseed-doc
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ms_doy2md - Convert between day of year and month and day of month

#include <libmseed.h>

int ms_doy2md ( int year , int jday , int * month , int * mday );

int ms_md2doy ( int year , int month , int mday , int * jday );

ms_doy2md calculates the month and day of month ( mday ) for a given year and day of year ( jday ).

ms_md2doy calculates the day of year ( jday ) for a given year , month and day of month ( mday ).

For both routines the expected and resulting ranges for each value are:

year : 1900 - 2100
jday : 1 - 366
month : 1 - 12
mday : 1 - 31

A day of year of 366 corresponds to the last day of a leap year.

ms_doy2md returns 0 on success and -1 on error.

ms_md2doy returns 0 on success and -1 on error.

Chad Trabant
IRIS Data Management Center