Template:Sec2MJD
60511.93775463
Posix timestamp ( Unix time, i.e. seconds since 1970-01-01T00:00Z) to MJD.
Expected value 60511.93775463 or as shown by tycho.usno.navy.mil after this page. Ignore minor rounding derivations, see also template:MJD2sec (edit•talk•links•history).