TruncToDay

Truncates a datetime value to the day.

Syntax

• TruncToDay(t)

  • t is a datetime structure or a timestamp

Description

If t is a DateTime structure or a timestamp, then TruncToDay(t) returns t rounded to the nearest preceding midnight; effectively, it sets the hour, minute, second, and millisecond parts to zero.

TruncToDay(t) is a DateTime structure or a timestamp if t is.

Examples

t ≔ datetime(1985, 06, 07, 18, 20, 52, 137)

date.year: 1985
date.month: June
date.day: 7
time.hour: 18
time.minute: 20
time.second: 52
time.millisecond: 137

TruncToDay(t)

date.year: 1985
date.month: June
date.day: 7
time.hour: 0
time.minute: 0
time.second: 0
time.millisecond: 0