# How to apply validation on time
**URL:** https://discuss.tryton.org/t/how-to-apply-validation-on-time/2111
**Category:** Developer
**Created:** [December 23, 2019, 6:02am UTC](https://discuss.tryton.org/t/how-to-apply-validation-on-time/2111 "2019-12-23T06:02:29Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@prashasti.sharma](https://discuss.tryton.org/u/prashasti.sharma)
#### Post date: [December 23, 2019, 6:02am UTC](https://discuss.tryton.org/t/how-to-apply-validation-on-time/2111/1 "2019-12-23T06:02:29Z")
Sir, how to apply validation on time field so that it takes the entry from 8:00 am of the present day to 7:00am of next day.
Any help will be appreciable.
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### Author:  [@ced](https://discuss.tryton.org/u/ced)
#### Post date: [December 23, 2019, 8:47am UTC](https://discuss.tryton.org/t/how-to-apply-validation-on-time/2111/2 "2019-12-23T08:47:52Z")
Is it time or datetime?
Any way, you can set a domain on the field.
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### Author:  [@prashasti.sharma](https://discuss.tryton.org/u/prashasti.sharma)
#### Post date: [December 23, 2019, 8:55am UTC](https://discuss.tryton.org/t/how-to-apply-validation-on-time/2111/3 "2019-12-23T08:55:33Z")
Sir, i need to measure patients hourly data in terms of hours by hours in the form view that is from present day’s entry morning 8:00 am to next day 7:00 am. Code is given below:
`time_of_measurement = fields.Time('Time At Measurement(hr/hrs)', format="%H")`
But on applying this time is coming in terms of 00:00 to 24:00 and i need to show in form view like present day’s entry morning 8:00 am to next day 7:00 am.
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### Author:  [@ced](https://discuss.tryton.org/u/ced)
#### Post date: [December 23, 2019, 6:01pm UTC](https://discuss.tryton.org/t/how-to-apply-validation-on-time/2111/4 "2019-12-23T18:01:20Z")
Then by convention you can cover all cases, if the time is before 8:00 it is on the next day.
But by experience, it is usually better to store datetime if you want to store when something happened.