I need shift field = Morning Afternoon Night

[Sxbbb]

I have Field 

Morning shift time 06.00-13.59 hrs. Afternoon shift 14.00-21.59 hrs. Night shift 22.00-05.59 hrs. I need shift field = Morning Afternoon Night I want to bring time TimeStartDowntime to TimeFinishDowntime is divided into shifts.

EX

StartDowntime ='11:42:40' to FinishDowntime ='23:03:38'
The shifts are morning, afternoon, and night.

I need a field that displays values ​​like this.

[BrunPierre]

Try this.

If(TimeStartDowntime >= PurgeChar(MakeTime(06,00,00),'AMP') and TimeFinishDowntime <= PurgeChar(MakeTime(13,59,59),'AMP'), 'Morning',
If(TimeStartDowntime >= PurgeChar(MakeTime(14,00,00),'AMP') and TimeFinishDowntime <= PurgeChar(MakeTime(21,59,59),'AMP'), 'Afternoon',
If(TimeStartDowntime >= PurgeChar(MakeTime(22,00,00),'AMP') and TimeFinishDowntime <= PurgeChar(MakeTime(05,59,59),'AMP'), 'Night' ))) as Shift

[Sxbbb]

No. Is there another way?

[BrunPierre]

Could you share a sample of the data?

[Sxbbb]