What is the correct version for September as abbreviation: Sep or Sept.? I have done some research but I see different answers and both Sep and Sept. are supported in their own way and I'm a little bit confused. Could you please advise me what is the right way of abbreviating September?
closed as primarily opinion-based by AndyT, David, Mari-Lou A, FumbleFingers, Edwin Ashworth Sep 8 '17 at 18:35
Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.
If you want consistent three-letter abbreviations for each month, then Sep is perfectly acceptable. It's in general use.
There may be those who insist on Sept as the Latin prefix which takes the -ember suffix, and use that to justify Sept along with Nov and Dec. But Nov and Dec are just as likely to be "the first three letters" and it's fine to adopt Sep on that basis too.
However, I've also seen SPT for September; and UK railway tickets have been known to use a combination of first and last letters with one other letter from the middle of the name (JNY, FBY, DMR), although that's less common now.
As long as the context makes it clear that the word is an abbreviated month, and the month can be readily interpreted, it doesn't actually matter what it is.
Both abbreviations are correct. Source: http://www.abbreviations.com/abbreviation/September