Birkat Hachamah

Every 28 years ...

Given the close relationship, and common beliefs of Judaism, Christianaity, and Islam (for those Muslims who can read) , I'm somewhat surprised that I have never heard of this before. I wonder if Charles Johnson is observing?  snark “ Every 28 years the sun returns to the same position, at the same time of the week, that it occupied at the time of its creation—at the beginning of the fourth day of creation. A special blessing – called Birkat Hachamah, "the sun blessing" – is recited to mark this event. Due to the rarity of this event, this blessing is customarily recited amid large public gatherings of men, women and children. ”