disable local wifi radio at night

Of course, it can be arranged by using ssid scheduling.

config wireless-controller vap

edit vap1

set schedule XXX

end

where XXX is a schedule name, which is created and modified as follows:

config firewall schedule recurring

edit XXX

(here you can set start time, end time and day, so ssid works only during this period)

end

For your requirement, just set schedule for each ssid on the local radio, so all ssids will be down

beyond the scheduled period(local radio is disabled)