//astronomy/io.github.cosinekitty.astronomy/Time/Companion/fromMillisecondsSince1970
fun fromMillisecondsSince1970(millis: Long): Time
Creates a Time object from the number of milliseconds since the 1970 epoch.
Operating systems and runtime libraries commonly measure civil time in integer milliseconds since January 1, 1970 at 00:00 UTC (midnight). To facilitate using such values for astronomy calculations, this function converts a millsecond count into a Time object.