newFromUnixUtc
Creates a #GDateTime corresponding to the given Unix time @t in UTC.
Unix time is the number of seconds that have elapsed since 1970-01-01 00:00:00 UTC.
This call can fail (returning null) if @t represents a time outside of the supported range of #GDateTime.
You should release the return value by calling g_date_time_unref() when you are done with it.
Return
a new #GDateTime, or null
Since
2.26
Parameters
t
the Unix time