# Date math - 3 months from a specific date **URL:** \ **Category:** Ask for Help\ **Created:** [July 18, 2022, 4:10pm UTC](https://community.glideapps.com/t/date-math-3-months-from-a-specific-date/44730 "2022-07-18T16:10:54Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![Jeff\_Hager](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jeff_hager/32/43_2.png) [@Jeff\_Hager](https://community.glideapps.com/u/Jeff_Hager)\ **Post date:** [July 18, 2022, 4:25pm UTC](https://community.glideapps.com/t/date-math-3-months-from-a-specific-date/44730/2 "2022-07-18T16:25:06Z")
> [@Glide Editor screen goes blank when using Math Column](https://community.glideapps.com/t/glide-editor-screen-goes-blank-when-using-math-column/19646/15): > > Edit: I have some updates to this formula that I’ve explained in the post below. You’re requirement to back Feb 29th by a day if it’s not a leap year does complicate it a bit, but that’s not a problem. It just makes for a formula that’s much larger. Here is the formula if we were to allow Feb 29th to roll over to Mar 1st. ((Now-DAY(Now)+15)+(Years\*365.25)) - DAY((Now-DAY(Now)+15)+(Years\*365.25)) + DAY(Now) ‎ ‎ ‎ ‎ ‎ To get the leap year date of Feb 29th to back date to Feb … --- _[View the full topic](https://community.glideapps.com/t/date-math-3-months-from-a-specific-date/44730)._