The International Moon Calendar is not the the same as the International Lunation Calendar (ILC) but a part of the International Week Calendar (IWC), although not part of the International Standard Week Calendar (ISWC). It does not have a standard acronym since IMC already designates the International Month Calendar (with irregular lengths). It can be considered a variant of the International Fixed Calendar (IFC).
A moon in this calendar is exactly 4 weeks long and begins on Monday. The only exception is the last moon of the year which may include the 53rd week, alias leap week, and therefore is 5 weeks long.
| Week | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|
| Mon | Tue | Wed | Thu | Fri | Sat | Sun | |
| W1 | 01 | 02 | 03 | 04 | 05 | 06 | 07 |
| W2 | 08 | 09 | 10 | 11 | 12 | 13 | 14 |
| W3 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| W4 | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| W01 | W02 | W03 | W04 | W05 | W06 | W07 | W08 | W09 | W10 | W11 | W12 | W13 | W14 | W15 | W16 | W17 | W18 | W19 | W20 | W21 | W22 | W23 | W24 | W25 | W26 | W27 | W28 | W29 | W30 | W31 | W32 | W33 | W34 | W35 | W36 | W37 | W38 | W39 | W40 | W41 | W42 | W43 | W44 | W45 | W46 | W47 | W48 | W49 | W50 | W51 | W52 |
| Q1 | Q2 | Q3 | Q4 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Q11 | Q12 | Q13 | Q21 | Q22 | Q23 | Q31 | Q32 | Q33 | Q41 | Q42 | Q43 | ||||||||||||||||||||||||||||||||||||||||
| M01 | M02 | M03 | M04 | M05 | M06 | M07 | M08 | M09 | M10 | M11 | M12 | M13 | |||||||||||||||||||||||||||||||||||||||
| Moon | Celtic Zodiac | Nature | Weather | Culture | Color |
|---|---|---|---|---|---|
| M01 | 🦌 Stag / Deer | Wolf | Ice | Old | ⚪ Gray |
| M02 | 🐱 Cat | Snow, Storm | Hunger | ⚪ White | |
| M03 | 🐍 Snake / Adder | Worm, Crow, Crust, Sugar | (Thaw, Melt) | Lenten, Chaste, Sap | 🟢 Lime |
| M04 | 🦊 Fox | Grass, Fish, Hare, Egg | (Breeze) | Paschal | 🔴 Pink, Magenta, Fuchsia |
| M05 | 🐮 Bull / Cow | Flower, Milk, Birch | (Bloom, Blossom, Joy) | 🟢 Green | |
| M06 | 🐲 Seahorse / (Dragon) | Strawberry, Rose | Hot, Heat | Mead | 🟣🔴 Rose, Lilac |
| M07 | 🐦 Wren / Bird | Buck, Wort | Thunder | Hay | ⚪🔵 Silver, Cyan, Light |
| M08 | 🐴 Horse / (Unicorn) | Sturgeon, Fruit, Grain | 🟡 Gold, Yellow | ||
| M09 | 🐟 Salmon / Fish | Corn, Barley | Harvest | 🟤🟠 Brown, Orange, Olive | |
| M10 | 🦢 Swan | Wine | (Windy) | (Vintage) | 🔵 Blue |
| M11 | 🦋 Butterfly | Leaf | (Foggy) | Hunter's, Blood, Sanguine | 🔴 Red |
| M12 | 🐺 Wolf / Hound | Beaver, Oak | Frosty | Mourning | 🟣 Purple |
| M13 | 🦅 Hawk / Falcon / (Eagle) | Cold | Yule | ⚫ Black, Dark |