Left BIF at about 1a.m. Went for a walk across the wide Antarctic ice sheet and checked out the arch constructions near my Jamesway. To my surprise, one of the arches had a swing attached. This depends on it if it is 'flat mail' or 'package mail'. Some of the letters friends mailed me took 2 weeks including a semi-flat package with a little book.
Letters can sometime take longer depending of the weather.
Package mail can take as long as over a month. Cargo has always priority over packaged mail. The collective address is an Army address in the states. Good night, and thank you for all your questions. Andy has filled the balloon for launching.