* 30 Earth Months: This is a common way to measure time. There are approximately 29.5 days in a lunar cycle (the time it takes for the moon to go through all its phases). So, 30 moons would be about 885 days (30 x 29.5), or just over 2 years and 4 months.

* 30 Lunar Cycles: If you're talking about the time it takes for the moon to orbit the Earth 30 times, that's about 885 days (30 x 29.5).

To understand what you mean by "30 moons", please give me more context.