Various names for monthly moon cycles:


Modern Ancient Celtic

January
wolf moon
Fearn-Alder

February
Storm moon
Saille- Willow

March
Chaste moon
Nuin- Ash

April
Seed moon
Huath- Hawthorn

May
Hare moon
Duir- Oak

June
Mead moon
Tienne- Holly

July
Hay moon
Coll- Hazel

August
Corn moon
Muin- Vine

September
Harvest moon
Gort- Ivy

October
Blood moon
Ngetal- Reed

November
Snow moon
Bith- Birch

December
Oak/cold moon
Luis- Rowan

-----------------------------------------------------------

Remember the saying "in a blue moon"? Well there actually is such a thing so you can in some bets at the very least lol jk. The 13th Moon called the 'Blue Moon' occurs when there are two full moons in one month. The date of this moon varies year to year. The Celtic's called it 'Ruis' - Elder.
It is traditional practice to set a list of goals for yourself for the next Blue Moon, just like the typical north american New Years celebration.

What moon clycle is best for casting certain spells:

Spells cast under a....
Waxing Moon (7-14 days after a New Moon)

Love
Luck
Growth
Wealth
Health
New projects
Initiation
enhancement
success
courage
friendship
(Three days after a new moon is the most powerful time for spells concerning growth and new beginnings)

-----------------------------------------------------------

Waning Moon (3-10 days after a Full Moon)

ridding of illness
ridding of addictions
banishment of evil
neutralization
removing of harm
dispelling negativity
-----------------------------------------------------------
Full Moon (14-17 days after a New Moon)

prophecy
protection
money
dreams
legal matters
divination
knowledge
(This is really a good time for any kinds of spells but especially the ones above)
-----------------------------------------------------------
New Moon

new projects/ventures
new beginnings
fresh starts
health
love
romance
(Some people are wary about doing spell work when there is no visible moon so they may wait a day or two until the moon is visible)