- start_date – A date that represents the start date in a valid Excel serial number format.
- months – The number of months before or after start_date.
Use EDATE to get the same date in future or past months. For months, use a positive value for future dates and a negative value for dates in the past.
EDATE is clever about rolling “end of month” dates forwards or backwards. For example, =EDATE(“1/31/2015”,1) returns the date “2/28/2015” and =EDATE(“1/31/2016”,1) returns “2/29/2016”, since 2016 is a leap year.