Template:Sec2MJD
60645.944722222
Posix timestamp ( Unix time, i.e. seconds since 1970-01-01T00:00Z) to MJD.
Expected value 60645.944722222 or as shown by tycho.usno.navy.mil after this page. Ignore minor rounding derivations, see also template:MJD2sec (edit•talk•links•history).