NOW()
=NOW()
The function returns the current date and time. This can be used to log the current time of day when a cell is changed or when a formula is run.
=NOW() - 7
This will give the date and time for a week ago.
=NOW() + 7
This will give the date and time for a week in the future.
=NOW() + 90
This will give the date and time for 90 days in the future.
This will give the date and time for 90 days in the future rounded to the nearest hour.
The NOW function is used to get the current date and time; it takes no arguments and updates when a worksheet is updated.