erlang:system_info( start_time ) as date_time?

[bengt]

Greetings,

How do I get from
1> erlang:system_info(start_time).
-576460752000000000

to some thing like {{2020,4,6},{22,27,0}} ?


Different question:
Is it possible to find out when a gen_server was started? Or how long it has been running? Without letting init/1 save it in state.
It would help me finding out if a gen_server was started by its supervisor about the time when the data transfer suddenly dipped.


Best Wishes,
bengt
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