Trades must be offered and accepted prior to 11:59 p.m. Pacific Time
on the day of your deadline in order to be processed. Yahoo! will
continue to process trades after the deadline, provided that they were
agreed upon prior to the deadline.
For example, if your league features a March 3rd trade deadline,
teams may accept trade offers until 11:59 p.m. Pacific Time on March
3rd. After that time, no new offers may be proposed and no existing
offers may be accepted.
If the same league featured a 2-day review period, a trade accepted
on March 3rd would process after the review period expired at 11:59 p.m.
on March 5th. In a Custom League, the commissioner may approve trades
after the deadline, again assuming it was pending prior to the deadline.