It is defined as the main solar time at Mars' prime meridian.

它被定义为火星本初子午线上的主太阳时。

Which is sort of funny because this was essentially 50 years before the prime meridian was established and agreed upon on earth at the international meridian conference back in 1884.

这有点有趣，因为这实际上是在地球的本初子午线被确定并在 1884 年的国际子午线会议上达成一致的 50 年前。

Much like how earth has a prime meridian marking for which universal coordinated time is based off of, Mars has a meridian that was first proposed way back in 1830 to be exact and is marked by a crater known as Airy-0.

就像地球上用来标记世界协调时间的本初子午线一样，火星上的子午线最早是在 1830 年提出的，精确地说，火星上有一个被称为 Air-0 的陨石坑。