When using directly log( the log lines come from `general` not from the module itself.
`Aug 29 19:38:08 general info Starting speakerstats for conference...`
It's starting at 1 hour because os.time(os.date("!*t") returns the wrong
time depending on system timezone. os.time() already returns the number
of seconds since epoch in UTC so just use that.
Fixes#5595