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[1] [CITE@en[Rata Die - Wikipedia]]
([TIME[2017-02-16 00:50:24 +09:00]])
<https://en.wikipedia.org/wiki/Rata_Die#REXX>
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> The DATE function of the REXX computer language can return the number of complete days (that is, not including the current day) since and including the base date, 1 January AD 1 Gregorian, if the "Base" option is specified. This function uses local, not Greenwich, time. REXX does not use the name "Rata Die".
> 

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