Exact time NSC updates online status

[getshm]

Does anyone know by any chance the time during the day NSC( or more generally USCIS ) updates the online status?

???At anytime (work hour)
???Batch job (At some specific time based on the scheduled job)
???some other pattern

 

[sairam1]

getshm

Based on my personal experience on my I-140 approval and 2nd EAD approval, I am sure the update is done overnight.

Status had not changed just before I went to bed. It changed to approved when I checked first thing in the morning.