# Template:MJD

60527.020983796

Check the result at tycho.usno.navy.mil after purging this page. Usage
`{{MJD}}` = `{{YMD2MJD}}` + `{{dectime}}`.
`{{MJD|year | month | day|hours | minutes | seconds}}` converts a specified date.
`{{MJD|year}}` = `{{MJD|year | 01 | 01 | 00 | 00 | 00}}`.
Examples
`{{MJD|-4712|1|1}}` = -2399999 (JD = -0.5, for proleptic Julian calendar date)
`{{MJD|-4712|1|1|12}}` = -2399998.5 (Julian Day 0 at noon)
`{{MJD|1858|11|17}}` = 0
`{{MJD|1969|12|31|23|59|59.98}}` = 40586.999999769
`{{MJD|1969|12|31|23|59|59.99}}` = 40586.999999884
`{{MJD|1970}}` = 40587
`{{MJD|2024}}` = 60310
`{{MJD|2024|01|01|00|00|00.01}}` = 60310.000000116
`{{MJD|2024|01|01|00|00|00.02}}` = 60310.000000231
Accuracy
{{#expr:({{MJD|2007|01|01|00|00|01}}-{{MJD|2007|01|01|00|00|00}})*86400}} = 0.99999331869185, good enough for 1/100 seconds, but not milliseconds.
{{`MJD2HMS|0.99999331869185/86400`}} = 00:00:01

See and for details. Optional substitution works if all six parameters and subst=subst: are specified, or for the current date {{ subst:MJD|subst=subst:}}.