Dates are not generally abbreviated in regular text matter; The Declaration of Independence was signed on July the fourth, 1776. The word the is sometimes omitted. The date might be written July fourth but never July four.
The abbreviations ult. inst. and prox. with a numeral (meaning the 25th of last month, the 25th of this month, the 25th of next month) are often used in letters, but should not be used in print unless the literal reproduction of a letter is intended.
Do not use st, d, rd, or th after a date given in figures; August the sixth, not August 6th.
The accepted abbreviations for the months are:
| Jan. | Apr. | July | Oct. |
| Feb. | May | Aug. | Nov. |
| Mar. | June | Sept. | Dec. |
The accepted abbreviations for the days of the week are:
| Sun. | Tues. | Thurs. | Sat. |
| Mon. | Wed. | Fri. |
The accepted abbreviations may be used for the months when the day is given, but not when the month and year alone are given;
Jan. 15, 1916, but January 1916.