Comma After Year In Date

See chicago manual of style, section 6.46:

Comma After Year In Date. If a month, day and year come in the middle of your sentence, put another comma after the year: Simple rules & useful examples.

Commas
Commas from webapps.towson.edu
The rules for placing commas in dates aren't very stable these days. He hit the ball, dropped the bat, and ran to first base. you may have learned that the comma before the and is unnecessary, which is fine if you're in control of things. Or to separate days of the week and the date.

Monthspacedaycommaspaceyear and i don't care about leap years and days of month should be anything between 1 and 31 with no leading 0.

Is a comma needed after the year 1940? Insert a comma between a day of the month and a year. He hit the ball, dropped the bat, and ran to first base. you may have learned that the comma before the and is unnecessary, which is fine if you're in control of things. Use a comma in your dates to separate date and year.