MINUTE

MINUTE —

MINUTE (date)

MINUTE converts a serial number to a minute. The minute is returned as an integer in the range 0 to 59.

Note that Gnumeric will perform regular string to serial number conversion for you, so you can enter a date as a string.
This function is Excel compatible.

MINUTE(0.128472) equals 5.

HOUR, NOW, TIME, SECOND.