The Enoch calendar is simple — however, the truth is that there are two points of time for the 400 years, and they happen to be exactly 400 years apart. The effect of this is to have alternating periods of 200 years. For 200 years they are the same, then for 200 years one is a week ahead of the other. This means that in the beginning, the lunar calendar intersected this week because the calendar of Enoch begins in the middle of the week of creation, that is, Wednesday.