Time is displaying incorrectly for the whole team

Our account is set for US Pacific time (currently 3:41pm).

When I mouse over any team member’s avatar, it reads 10:41pm (with a little crescent moon to the left of the time)

Why is this showing a random timezone?
(I live in Japan but work Pacific Time, so my profile’s time zone is also Pacific Time, but it’s 7:41am in Japan, so 10:41pm makes no sense for any reason.)

Also, what does the “undefined” refer to?