Change the router clock to daylight savings time

[sirrahking]

I have an inverter for Solar panels and I can set the inverter to charge up solar batteries and the EV over night on a cheaper rate. The inverter gets the time from the router. The router is stuck on GMT, how do I change it onto british summer time? Thanks!

[Crimliar]

The router and your devices actually store and exchange timestamps in UTC (Coordinated Universal Time - I know!) and it's down to individual devices (such as the inverter) to add their offsets based on their own locale settings.

That the inverter is not taking account of the change from BST to GMT is more an issue with the inverter software.  You can't change the setting of UTC on the router, but if you did then nothing else on your network would work - and you'd be totally without internet.  The internet runs on UTC not local time!