My paper was submitted to a conference, and they sent me a rebuttal email specifying the deadline in UTC-12 time zone.
However, when I prepared my rebuttal and tried to submit it into the system, I found that the system was closed. The time was over in my time zone but more than 12 hours were still remaining in UTC-12 time zone.
Although my paper seemed to be accepted(maybe somewhat marginally), yet I did not want to demonstrate a naive attitude.
What is the best thing to do in such a situation?