I have a poor memory so I made this memory game but it hasn't helped. It takes me awhile at night to fall asleep. Plus I get up several times.
So I connected something with the first day of each of the 12 months. Kept it simple. Like 1 June celebrates the birthday of the poet Dante. 1 October the anniversary of the death of Don Juan of Austria, natural son of the Emperor Charles V. He was the Victor at Lepanto.
So in bed I try to list them in order. Sometimes I can list all but usually not. Sometimes I'll remember one but then seconds later I'll have forgotten it again.
But I've had such a memory for years.