expression
first horse day of the month; traditional Inari shrine festival day
Refers to the first day of the horse in the lunar calendar, especially in the second month. Widely known as the day for visiting Inari shrines and praying for good harvests and business prosperity.
初午には、近所の稲荷神社にお参りに行く。
On the first horse day, I go to pray at the local Inari shrine.
今年の初午は二月の初めだった。
This year's first horse day was in early February.