Predefined Constants

The DATE_ constants are defined and they offer standard date representations, which can be used along with the date format functions (like date()).

Following constants specify a format returned by functions date_sunrise() and date_sunset().

SUNFUNCS_RET_TIMESTAMP (int)
Timestamp
SUNFUNCS_RET_STRING (int)
Hours:minutes (example: 08:02)
SUNFUNCS_RET_DOUBLE (int)
Hours as floating point number (example 8.75)
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