March: 31st.
April: 5, 11, 14, 18, 20, 21, 24, 25, 26 and 28.
May: 1, 2, 3, 4, 5, 8, 9, 10, 11, 12, 15, 16, 17, 18, 19, 22, 23, 24, 25, 26, 30 and 31.
June: 1, 2, 5, 6, 7, 8, 9, 12, 13, 14, 15, 16, 19, 20, 21, 22, 23, 26, 27, 28, 29 and 30.
July: 3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 17, 18, 19, 20, 21, 24, 25, 26, 27, 28 and 31.
August: 1, 2, 3, 4, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 21, 22, 23, 24, 25, 28, 29, 30 and 31.
September: 1, 4, 5, 6, 7, 8, 11, 12, 13, 14, 15, 18, 19, 20, 21, 22, 25, 26, 27, 28 and 29.
October: 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 17, 19, 20, 24, 27 and 31.
November: 2, 9, 16, 23 and 30.
December: 5, 8 and 13.