I will be making another post before the swap to make sure everyone understands the dates. But the start and end dates are controlled by the system which operates on UTC which is 6 hour ahead of here. So the swap will actually start on January 4 at 6pm Central Time. It will end on January 11at 6pm Central Time. The deadline for seeds to be sent is still the 19th and that is the day you need to have it in the mail. After the swap ends there will be a link where you can mark it as sent and post the tracking number so I can follow it's progress.