Months, Days, and Years in Dates Exercise (11)

All but one of the following sentences demonstrate incorrect style for styling dates according to The Chicago Manual of Style; revise the style of the number as necessary:

Answers and Explanations

In American English, month, day, and year should always be given with the month spelled out and the day and year, separated with a comma, expressed with numerals.

1.
Original: I’ll expect you on the 25th, then.
Correct : I’ll expect you on the twenty-fifth, then.

When a date is mentioned in isolation, spell it out as an ordinal.

2.
Original: The study was concluded on 8/22/13.
Correct : The study was concluded on August 22, 2013.

Few countries observe the US month/date/year system, so foreign readers may misunderstand the date, and the numerical style is inappropriate for formal content. (If an abbreviated style is necessary, as in a table, style dates, for example, "22 Aug 2013," or use "8/22/13" if required but specify the system in a note.)

3.
Original: Registration will close on March 31st, 2013.
Correct : Registration will close on March 31, 2013.

Omit ordinals (st, nd, rd, and th) in dates.

4.
Original: On November 5, 2012, the store shut its doors for the last time.
Correct : On November 5, 2012, the store shut its doors for the last time.

This style for month, date, and year is formatted correctly.

5.
Original: The next occurrence was in February, 1978.
Correct : The next occurrence was in February 1978.

Do not insert a comma between the month and the year when no date is given.

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