If I understood correctly, does the statement below mean that I must e-mail on Friday, November 5, 2017 but no later than 12 pm to confirm the interview or does it mean that I can e-mail earlier by the deadline, which is 12 pm on Friday, November 5, 2017?

Statement:
Please e-mail no later than 12 pm on Friday, November 5, 2017 to confirm the interview.

I think the statement above means the former (i.e I must e-mail ON Friday, November 5, 2017 but no later than 12 pm to confirm the interview). Is my understanding correct?

3 answers

No. It means to email anytime before 12 pm on Friday, November 5, 2017.

Thank you!

You're welcome!