My calendar is based on the 64 hexagrams, with the kicker being, the calendar is a window into the future and the past, but more importantly the present scheme of things. The calendar can be used to gain insight into the scheme of past and future events.
My main passionate observance with this calendar, one knows when to fast. Also, as stated with hexagram 36, one should fast for three days, and play close attention to three days before, and three days after peak-ness. I usually take raw, fresh fruit juice for three days after peak-ness or starting on the day of hexagram 36, in any event, I think that a person needs to fast at least once a week, juice fast, that is. And I will not question why four times a year. In all cases ask your doctor first before applying the method. It is very enlightening to know when to fast, and that of when to abstain from a full load of activities. I usually take a vacation from my full load of activities for about three to seven days. This helps me to somewhat purge some, if not all, poisons and other health impediments from my system, and this slowing process also helps to keep me out of harm's way as well, because as I do know, given the nature of hexagram thirty-six, it does mean Injury in some retrospect. Knowing that, I know not to take any undue chances. Again, this is all due to a general tendency that your calendar presents. Now about hexagram 63, I would like to impart upon you that hexagram 63 as indicated in the I Ching itself, is not necessarily an ending, in a sense it's the advent of a better foot hole as one climes the mountain of substantiality, so to speak.
Once again, try this, look up some great person's birthday and you will be a surprise. A hint..., the greatest person you know, be political leader or religious leader.