Rfc online dating updating quick books
In astronomy, an epoch is a specific moment in time for which celestial coordinates or orbital elements are specified, and from which other orbital parametrics are thereafter calculated in order to predict future position.
The official Japanese system numbers years from the accession of the current emperor, regarding the calendar year during which the accession occurred as the first year.
For example, for an epoch date of midnight UTC () on January 1, 1900, and a time unit of a second, the time of the midnight () between January 1 and 2, 1900 is represented by the number 86400, the number of seconds in one day.
When times prior to the epoch need to be represented, it is common to use the same system, but with negative numbers.
These representations of time are mainly for internal use.
If an end user interaction with dates and times is required, the software will nearly always convert this internal number into a date and time representation that is comprehensible to humans.