Moon Phase & Astronomy Calendar

ICS subscription for iPhone, iCal (Mac OS X), Google Calendar, etc.
Click here to subscribe

Full moons and meteor showers for your calendar

tinycalendarSubscribing to this public calendar (.ics file) will insert dates and times of events of astronomical significance into your iPhone / iCal / other calendar program / cybernetic mutant brain chip. This calendar is something I curate by hand at the beginning of each year to highlight full moons, new moons, eclipses, solstices, equinoxes, mercury retrogrades, plus a meteor shower or two and some other surprises. This calendar has been running continuously since 2007 and has over 110,000 subscribers.

Not sure if you want these items added to your calendar? You can preview what items will be inserted here.

iPhone / Macintosh OS X users, use Safari to click here to subscribe to these events using iCal.

The ICS URL (for google or yahoo calendar, etc.) is:

Frequently Asked Questions

Q: Does this work with Google Calendar or Yahoo Calendar?
A: Yes! Here are the instructions for Yahoo, and here are the instructions for Google. The URL you will subscribe to is:
Q: Why do events such as the Full Moon have both a date and time?
A: Because the time shows the exact moment when the the moon will appear most full. Depending on where you are in the world, you will want to plan your full moon adventure on the night that is closest to the full moon. For example, the September 26, 2007 full moon happened at 3:45 pm Eastern Time. If you were in Europe, that was 7:45 or 8:45 pm. If you were in New Zealand, that was  7:45 am on the following day – September 27th. So if you were in London, you’d want to howl at the moon on the night of the 26. But if you were in New Zealand, it’s the night of the 27th when the moon appeared brightest.

* Event times in this calendar are entered as UTC or Mountain Time – but your software should automatically convert to your local timezeone.

Q: How do I unsubscribe?
A: That depends on your device or software.

Just try googling for something like, “how to unsubscribe calendar iPhone”.


Found an incorrect date or time? Need to dispute the date or spelling of an astro-pagan holiday? Have some additional advice to contribute?

You can contact Canton at

The author of this calendar, relaxing on the surface of the moon wearing his earthrise goggles and dust-retardant rave-wear.

“I absolutely am in love with your calendar and I’m so thankful for the work you put into it. I always missed events before but my daughter and I watched the Geminids together because of YOU! She is 10 and just loved it! So much so that she asked for (and received) a tent for Christmas so we could watch stars together and go in the tent to snuggle when we got too cold.”
– R.S.

I came here to say “Thank You”

YOU’RE WELCOME! I love putting together this calendar each year. Everyone needs a reminder to look up at the sky from time to time. If you’d like a way to say “thank you”, then buy YOURSELF a present! If you purchase anything from after following this link then I get a 5% kickback from whatever you’ve added to your cart. (It doesn’t cost you anything extra.) Use this link to start ALL your holiday shopping!

Here are some gift ideas for yourself, all of which I have enjoyed myself:

  • Seveneves by Neal Stephenson. Rip roaring science fiction. It starts off with the moon blowing up. (Not a spoiler, it happens on page two.)
  • A great starter telescope for under $100. Great for looking at our planets, the moon… I used this to witness the transit of Mercury in 2019 (with a sun filter of course.) Kids love refractor telescopes because they don’t invert the image which lets you spy on the neighbors.
  • This affordable spotting scope also gets you closer to the planets, and comes with a mini tripod and an attachment for taking photos through the eyepiece with your cell phone.