I think the cycles take 25920 years.
So a half-cycle would be 12960 years. You're close enough. It often is rounded up to 13000.

I don't know how often we get these events. What events? Extinction level events.
Could be a solar micronova, a pole shift, or both. One could cause the other.

The Suspicious Observers guy on youtube, he figured it all out: https://www.youtube.com/@Suspicious0bservers

This period of two months, it will make a lot of difference how long that lasts. Because there will be food shortages. After two weeks, without power, without ... who knows what, without any monetary system... I can't even imagine. Such a period better not last too long. Two weeks is 14 days too long.
Two months would be 61 days. It could be the difference between life and death. Can you get treatment for a nasty infection in time? No? Lose your leg! After another week you lose your life.

In the end all will be fine, but we never get back the time they took from us.
We did not know, so that makes it different. Afterwards, when we know what they have done to us, and for how long, we .... I would tear them to shreds, make them suffer!
So they better hang before someone like me gets started on them. Do to them what they have done to us, and our children. They better just hang.