The time is the UT (Universal Time) corresponding your normal calendar and
clock time (local time zone time). Date is given in an increasing order of
units (day month year) and time in the universal decreasing order of the
units (hour minute second). If more precision is needed, the seconds can be
given with decimal part (although the field for seconds is only two
characters wide, for artistic reasons).
The default time is for epoch J1950.0 (that is: 1st Jan 1950, at noon).