Dates and Ordinal NumbersDo not use the ordinal designators (st, nd, rd, th) when writing dates if both month and day are given. Prefer writing Jan. 12, not Jan. 12th. However, if the date comes before the month, use the ordinal designator.
Reports are due by Jan. 15.
Abreviating monthsWhen a month is used with a specific date, abbreviate only the following months: Jan., Feb., Aug., Sep., Oct., Nov., and Dec. Spell out March, April, May, June, and July. In addition, spell out all names of months when using the month alone or with a year alone.
In February, we will have our divisional contest, but by March 1998, we will discontinue divisional contests completely.
Punctuating datesWhen a phrase lists only a month and a year, do not separate the year by commas. When a phrase refers to a month, day, and year, set off the year by commas.
January 1992 was a bitterly cold month.
Do not use the contracted form for years ('94; '20s) unless each is a part of a specific title or phrase. Using an apostrophe and the two digits saves only one space. Always write out year dates in full (1994; 1920s).