Is it Possible to Setup alerts which should shoot only for one particular period of time? For example , I want alert: ABC to shoot from 12:00 AM IST to 6:00 AM IST
That’s not supported at the moment, but possibly in the future. There are feature requests of this, see issue.
What datasource are you using?
If you’re using Prometheus as datasource there’s possibility to use some of it’s functions like hour(), day_of_week() etc that you can use in your query to filter. But this is a bit of a hack I would say, but could work.