On Sun, Oct 04, 2020 at 07:28:34AM +0300, Jean Louis wrote: > * Eli Zaretskii [2020-10-03 15:23]: [...] > > Where did you get the value 1599712637489? What is its semantics? [...] > > (format-time-string "%c" 1599712637.489) > > > > where I divided the value you provided by 1000. > > Thank you, that is what I also search, how did developer made that > number. It is export of SMS from encrypted SMS application named > Silence. Maybe I will get answer soon. FWIW timestamps as "milliseconds from UNIX epoch" as an integral type is one of the traditional Java time representations (these days they prefer to slap the whole OO abstraction cream cake on top ;-) So this might well be a Javaism. Cheers - t