Set dateandtime by MQTT in order to avoid ntp after reset/restart

[andreas2555]

Hi,

I would like to run openDTU in an isolated mini-network without Internet access. The date and time can therefore not be set initially via an ntp request. I know the function via Web-API, but I don't want to use it, because then I have to store the admin password for openDTU on another system.
Question: Is there a way to define the timestamp after a restart from outside, e.g. via RTC by MQTT messages, without having to specify a password that also enables other write operations?
My suggestion for a feature request would be to implement an MQTT function analogous to the setdateandtime of the Web API, which works without a password or login as long as openDTU “sees” 1.1.1970, as well as later for correction, as long as the current and target time are only a few seconds apart, e.g. 10 seconds.