MPPT Yield Today changes to '0' at ~22:00?

Has anyone noticed the same behavior of the ‘Solar Yield Today’ modbus register (EG. Slave 245/Address 784). I have two MPPT’s and they both report the same drop to 0 at the same time.

Now, it’s not a real problem as there won’t be additional yield between 22:00 and 00:00 but it’s the principle for me. Could it be the Venus timezone which is default UTC?

The MPPT doesn’t have an RTC. It times the reset from sundown.