Piffka wrote:I like that~! I like things to start between the new moon and the full.
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Can you explain about the Julian day and its having such a long decimal? Does the Julian day start at the GM?
I am glad to hear you liked it.
Julian Day Number is the consecutive number allocated to date-time with origin (i.e., time zero) at noon of January 1st, 4713 BCE in the (proleptic) Greenwich Mean Time.
Although the name "Julian" is contained in the designation, it is not related with Julian Calendar (or even with Julius Caesar) , but comes from the concept of the Julian Period conceived by the 16th-century French classicist Joseph Justus Scaliger (1540-1609). The Julian period is a cycle of 7980 years consisting of multiple cycles inside it, e.g., Metonic cycle of 19 years, a "solar cycle" of 28 years..
Today it is used only for astronomical calculations.
For example:
Noon April 20, 2003 GMT .. 2452750.0 j.d.
(05:00 April 20, 2003 PDT)