I recently got a postdoc offer from the mathematics department of University X. Many mathematics departments in the US agree not to require responses to postdoc offers before a certain date. University X appears in the list on the American Mathematical Society (AMS) website as one of the universities that has agreed the the common deadline.
Quoting from the website of the AMS,
The following departments in the U.S. have formally adopted an agreement to coordinate their earliest deadline for responding to postdoctoral job offers for those jobs that begin in the fall of 2023. This agreement specifically excludes tenure-track offers, and it applies only to candidates who are less than or equal to two years past the receipt of the Ph.D. The departments listed below have agreed not to require responses to postdoctoral job offers before Monday, February 6, 2023.
My application and the associated offer fit the description in this paragraph, and yet University X has required a response significantly earlier than February 6th in their offer letter.
The offer from University X is good, but I am interested in other schools whose offers may come later (between University X's deadline and Feb. 6). I also applied for the National Science Foundation postdoc which will be announced after University X's deadline (and which is a reason for the common deadline).
Given that University X agreed the the Feb. 6 deadline, but now gives an earlier deadline, what should I do? I don't want to make waves at University X, but I also don't want to pass up other opportunities.
Edit: I did reach out to some other schools to which I have applied. Not all will be able to make a decision early enough for the University X deadline.