NOWReturns the current date and time as a date value.
Note that NOW is a volatile function, updating on every edit made to the spreadsheet, and can hurt spreadsheet performance.
NOW provides the current date and time. To create a date without the current time, use TODAY.
NOW will always represent the current date and time the last time the spreadsheet was recalculated, rather than remaining at the date and time when it was first entered.
The time or date component of NOW may be hidden by changing the number formatting on the cell. If either the date or time is not appearing, change the number formatting.
TODAY: Returns the current date as a date value.
DATEVALUE: Converts a provided date string in a known format to a date value.
DATE: Converts a year, month, and day into a date.
Returns the computer system date and time.