How many days in May 2030?

31 days

May 2030 runs from Wednesday the 1st to Friday the 31th.

Calendar grid for 5/2030, weeks starting Sun
ISO week	Sun	Mon	Tue	Wed	Thu	Fri	Sat
18	28	29	30	1Beltane	2	3	4Islamic New Year
19	5Cinco de Mayo	6	7	8	9	10	11
20	12Mother's Day	13Ashura	14	15	16	17	18
21	19	20	21Lag BaOmer	22	23	24	25
22	26	27Memorial Day	28	29	30Ascension Day	31	1

About May 2030

May 2030 has 31 days, of which 23 are weekdays and 8 fall at the weekend. Taking out the 1 federal holiday leaves 22 working days.