# Add TimeColumn's value to another TimeColumn's value

**URL:** <https://community.glideapps.com/t/add-timecolumns-value-to-another-timecolumns-value/63544>\
**Category:** Ask for Help\
**Created:** [July 5, 2023, 8:40pm UTC](https://community.glideapps.com/t/add-timecolumns-value-to-another-timecolumns-value/63544 "2023-07-05T20:40:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![TeamDigitale](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/teamdigitale/32/13473_2.png) [@TeamDigitale](https://community.glideapps.com/u/TeamDigitale)\
**Post date:** [July 5, 2023, 8:40pm UTC](https://community.glideapps.com/t/add-timecolumns-value-to-another-timecolumns-value/63544/1 "2023-07-05T20:40:58Z")

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Hi,  
i’m implementing a booking system where there are fixed time slots.  
I have a TimeColumn with the StartTime and i would like to get a TimeColumn with the EndTime calculated adding the StartTime and a TimeSlot value.  
EX:  
Start Time: 9:00 (entered)  
Time Slot: 0:30 (fixed value)  
End Time: 9:30 (calculated)

It’s not mandatory (in my app) to have TimeSlot as TimeColumn, it could be a string like “0:30” or a numeric value as 30.  
How can i get this ?  
Thanks in advance

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**Author:** ![Eric\_Penn](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/eric_penn/32/73888_2.png) [@Eric\_Penn](https://community.glideapps.com/u/Eric_Penn)\
**Post date:** [July 5, 2023, 8:54pm UTC](https://community.glideapps.com/t/add-timecolumns-value-to-another-timecolumns-value/63544/2 "2023-07-05T20:54:35Z")

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You could use a math column…

E.g.

Start+Slot/1440

or simply

x+y/1440… where x is your Start Time and y is your Time Slot

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<div class="post-metadata">

**Author:** ![ThinhDinh](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/thinhdinh/32/49_2.png) [@ThinhDinh](https://community.glideapps.com/u/ThinhDinh)\
**Post date:** [July 6, 2023, 12:46am UTC](https://community.glideapps.com/t/add-timecolumns-value-to-another-timecolumns-value/63544/3 "2023-07-06T00:46:07Z")

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It’s also important to emphasize that the TimeSlot value should be consistent for that to work. I would recommend keeping it as a number (of minutes).