Turning off WiFi at night on MikroTik RouterOS
1) In System -> Scripts add DisableWLAN:
2) Do anological steps for EnableWLAN.
3) In System -> Scheduler add:
4) Do anological steps for EnableWLAN.
NOTE: To disable/enable ethernet port 4:: interface ethernet disable ether4
or interface ethernet enable ether4
Source: https://goyoambrosio.com/2017/05/how-to-turn-off-wifi-at-night-in-mikrotik-routeros/