Male and female deities?

Question

Most ancient cultures that have a moon and sun deity in their beliefs, make them of opposite s*x, right? Most of the time the lunar deity is considered female due to the link of the cycle of the moon (28 to complete a cycle) to the menstrual cycle (hardly ever directly; about 28 days per cycle). Also, being the Sun more influential to the daily life of people (agriculture, warmth, etc.) and being opposite to the moon in most ancient beliefs, solar deities are usually male.

Examples of this: Greek and Roman culture. But there are exceptions like Shinto: the solar deity is female, Amaterasu, while the male deity is male, Tsukyomi. (Pardon the spelling for the names, I forgot how to write them...)

Now, my question:

Why is Amaterasu, the sun, female and Tsukyomi, the moon, male in Japanese mythology?

Answer 1

This is very similar to the Goddess Sol (sun)(beauty, nurturing, growth) and God Mani (moon) (longing, mania) in Norse mythology. Very similar to the 2 you mentioned. I think its seen as the man chasing the woman eternally. It was said that Sol carries the sun on a chariot from the Fenris wolf and Mani chases him to stop him from catching and killing Sol. Mani of course loves Sol and wants to whisk her away to safety. And when there is an eclipse it signifies the battle between Sol, Fenris and Mani to which there is never a victory so they continue their cycle. There is a more colorful story to it but this is the gist.

Answer 2

To be honest, I'm not sure why that is. It's the same in Asatru as well. A Female Sun goddess and a Male Moon goddess.