Does the Time instance need the cloud?

[ScruffR]

What a coincidence a very similar question was asked and answered merely a few hours ago

Will Time.local() still give accurate timing despite Cellular Disconnection?

I am using Electron, my application need to publish event with time stamp of real local time, this mean with time zone and Daylight Saving Time (DST) consideration. It seems Time.local() would take care of it, reading from the docs https://docs.particle.io/reference/device-os/firmware/electron/#local- But this is my question, say in the beginning we already connected to Cellular Network, then query the time zone with DST adjustment via AT command and use the value to set time zone accordingly.…

The RTC needs to be synced at least once (either via the cloud or manually via Time.setTime()) and then be kept powered so that it can hold the time.