New Moon 12/04/2021

Tomorrow, the 12th April, will see a new moon conjunction at around 3am UK time. It is also the first day of the sixth month in the Celtic calendar, Cuithe, cognate with Kutios in the Gaulish calendar. It also marks the beginning this year of the Islamic month of Ramadan, a time of fasting during daylight hours.

The new month has the Yerm month no. 19(09, and therefore has 30 days, running from 12th April to 11th May, inclusive.

The calendar for this month can be downloaded below.

3 thoughts on “New Moon 12/04/2021”

  1. hi, I’m not sure how to get in contact exactly so I’ll leave a comment here. I’m attempting to more closely recreate the old Irish Celtic lunisolar calendar to keep it stable across seasons. I’ve used a fantasy calendar creator to get it to 264.25 mean average days a year but what with the movable intercalary month and the second movable intercalary month plus an intercalary leap day i am stuck on how to program and format it, and how to account for the approximately 0.01 of solar drift. I wonder if it’s a project you’d be willing to help with. i am an awful mathematician. please contact at christine_obscene@outlook.com if you think you can help

  2. hi, I’m not sure how to get in contact exactly so I’ll leave a comment here. I’m attempting to more closely recreate the old Irish Celtic lunisolar calendar to keep it stable across seasons. I’ve used a fantasy calendar creator to get it to 264.25 mean average days a year but what with the movable intercalary month and the second movable intercalary month plus an intercalary leap day i am stuck on how to program and format it, and how to account for the less than 0.01 of solar drift. I wonder if it’s a project you’d be willing to help with. i am an awful mathematician. please contact at christine_obscene@outlook.com if you think you can help

    1. Hi Christine

      It’s a difficult problem and one I have struggled with for a long time.

      There are two problems with lunisolar calendars:

      1) Keeping them in sync with the solar year;

      2) Keeping them in sync with the lunar cycle.

      There are lots of ways to do this but no easy, single method. Even the best systems are not fully in sync and you often need to add days here, drop months there etc. If you look at my “New Celtic Calendar” page (https://time-meddler.co.uk/the-new-celtic-calendar/) it explains what I have done to try and solve this problem. Keeping the calendar in sync with the solar year is doable reasonably easily, but the lunar cycle is irregular and almost impossible to track over the long term. This is why I decided to switch to using Karl Palmen’s Yerm cycle (full details at https://www.hermetic.ch/cal_stud/palmen/yerm1.htm). This is the most accurate cycle with a reasonably simple formula that I have come across, and it takes out a lot of the hard work of working it out yourself.

      Beyond what is explained on my website and Karl’s I can’t really provide much more advice, unfortunately. It’s a conundrum that could take a lot of time, and the solutions I have employed are accurate enough for me and more accurate than anything I have ever come up with over almost 20 years of looking at this subject. If you have any specific questions about particular items then fire away, but I can’t really do more than that, unfortunately.

      TM

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