Subtract minutes from a time

You can subtract (or add) a number of minutes from a time using fractions.
Dates are represented as sequential whole numbers so 1 hour is equivalent to the fraction (1/24).
Times are represented as fractions based on there being 24 hours in a day.
1 Hour is 1/24 = 0.04166
1 Minute is 1/(24*60) = 1/1440
1 Second is 1/(24*60*60) = 1/86400

	A
1	=TODAY() = Friday 29 November 2024
2	=NOW() = Friday 29 November 2024 11:44:05
3	=A2-(25*(1/1440)) = Friday, 29 November, 2024 11:19 AM
4	=A2 - TIME(0, 25, 0) = Friday, 29 November, 2024 11:19 AM
5	=A2 - (4/24) - (75/1440) = Friday, 29 November, 2024 06:29 AM
6	=A2 - TIME(4, 75, 0) = Friday, 29 November, 2024 06:29 AM
7	=A2 - (6/24) - (30/1440) , (80/86400) = Friday, 29 November, 2024 05:12 AM
8	=A2 - TIME(6, 30, 80) = Friday, 29 November, 2024 05:12 AM

1 - Displays the current date. Custom format "dddd dd mmmm yyyy".
2 - Displays the current date and time. Custom format "dddd dd mmmm yyyy hh:mm:ss".
3 - Displays the current time minus 25 minutes
4 - Displays the current time minus 25 minutes seconds using the TIME function to return the correct decimal.
5 - Displays the current time minus 4 hours and 75 minutes.
6 - Displays the current time minus 4 hours and 75 minutes using the TIME function to return the correct decimal.
7 - Displays the current time minus 6 hours, 30 minutes and 80 seconds.
8 - Displays the current time minus 6 hours, 30 minutes and 80 seconds using the TIME function to return the correct decimal.
All these cells have been formatted with the custom number format "dddd, dd mmmm, yyyy hh:mm AM/PM".

Built-in Functions

NOW - The date serial number of the current system date and time.
TIME - The time as a decimal given an hour, minute, second.
TODAY - The date serial number representing today's date.

Related Formulas

Add minutes to a time
Subtract hours from a time
Subtract seconds from a time