TIMEVALUE

returns the date-time serial number, from a time given as text.

Syntax:

TIMEVALUE(timetext)

timetext is a time, expressed as text. TIMEVALUE returns the date-time serial number, which may be formatted to read as a time.

Example:

TIMEVALUE("16:48:00")

returns 0.7, the date-time serial number for 16:48:00. This may be formatted to read, for example, 4:48 PM.