Timer events not coming on as should be

I have 3-4 timer events, at different times. 30, 40, 60 minutes
I find that all come on a the same time…

Any suggestions?

This is because timers execute at fixed intervals corresponding to the hour. If you were to setup 4 timers with 30, 40, 60 minutes, you’d see them execute at 00/30, 00/40, 00/00.