You can see the full category hierarchy on the Category Map.

Loose apronyms:
Perfect Apronyms OnlyAll Apronyms
APRILAll Plants Resplendant In Leaves Tony McCoy O'Grady, who lives in the northern hemisphere.
APRIL (2)After Pelting Rain It Lightens Tony McCoy O'Grady
APRIL (3)As Predicted, Rain Is Likely! Roger Williams
AUGUSTAutumn's Upcoming, Gratefully Upgrade Sun Tan Tony McCoy O'Grady
AUGUST (2)Almost-Undressed Girls Undergo Sun-Tanning Tony McCoy O'Grady
DECEMBER (4)Dreadful -Expletive- Conditions - Expect More Bloody Endless Rain Tony McCoy O'Grady
FEBRUARYFrosty, Exceptionally Blustery, Rainy Usually, After Recent Yuletide Tony McCoy O'Grady, who lives in the northern hemisphere.
FEBRUARY (2)Feels Extra Blustery, Raincoats Usually Are Required, Yeah? Tony McCoy O'Grady
FEBRUARY (3)Frozen Exhaled Breath Rises Upwards And Rimes You Patricia Rix
JANUARY (3)Janus And Nebula Usher Aquarius Rising Yearly Rico Leffanta
JULYJuveniles Usually Laze, Yes! Tony McCoy O'Grady
JULY (2)Justly Unwound & Lazing Youths Tony McCoy O'Grady
JUNEJuly's Upcoming Next, Evidently Tony McCoy O'Grady
JUNE (2)Just Unending Nice Evenings Tony McCoy O'Grady
JUNE (3)June Ushers New Era! Charles H. Montgomery, Jr. Summer in Northern Hemisphere / Winter in Southern Hemisphere.
MARCHMay & April Rounding Corner Hastily. Angela Brett
MARCH (4)Mild And Rather Clement, Hopefully Tony McCoy O'Grady
MAYMerriment And Youthfulness Tony McCoy O'Grady
MAY (2)Moderate And Yummy Tony McCoy O'Grady
MAY (3)Many Anniversaries Yearly Angela Brett, because she knows so many people with birthdays in May.
MAY (4)Most Abundently Yarrowish Jeff Anonymous, hoping for some good plant activity in that month.
MAY (8)Many Arbours Yellow. Edwin Hermann
MAY (9)March? April? Yesterday! Angela Brett
NOVEMBER (2)Notions Of Violent Events, Monster Bonfires Evoke Reminiscences Tony McCoy O'Grady
OCTOBEROften Chilly, Then One Brings Extra Raiment Tony McCoy O'Grady, who lives in the northern hemisphere.
SEPTEMBER (2)Summer's End Prompts Timepieces Emendment - Must Become Early Riser Tony McCoy O'Grady