Time validation in constant

Dear ODK Team
I want to validate time how can i do this

Question is not clear. Could you please elaborate more or excerpt xls form here for better explanation.

1 Like

You may find an answer already posted to the forum in another thread:
https://forum.getodk.org/search?q=validate%20time

There is also a section of the docs on date and time:
https://docs.opendatakit.org/form-operators-functions/#date-and-time