According to AP Style, you should not use ordinal numbers for dates. You should always use figures or numerals (i.e. without st, nd, th, or rd).
• July 10th (Wrong)
• July 10 (Correct)
Furthermore, if a specific date is mentioned, then you can abbreviate the following months.
• Jan., Feb., Aug., Sept., Oct., Nov., and Dec.
However, March, April, May, June and July should not be abbreviated.
1. Today is Friday, Feb. 3, 2017
2. It’s February 2017
3. July 3, 2017
4. Dec. 4
5. January is one of my favorite months.
Furthermore, you cannot use an apostrophe in references like 1900s or 1600s etc. However, an apostrophe is only needed in the references like ‘90s or ‘80s.
• The decade of the Gregorian calendar began in the 1900s.
• The ‘80s were the famous time because it was about peace and love.