Reverts bdb3d649f and d1787f454. They failed to provide any appreciable different from the naive method.

Signed-off-by: Blake Skinner <bskinner@mit.edu>
We should not be handling time zones here; the app has a default TZ of "America/New_York"

Signed-off-by: Blake Skinner <bskinner@mit.edu>
Clean up the date format strings a bit. These should be as short as possible so strip the minute when there aren't any and eliminate the space between the time and the period.

Signed-off-by: Blake Skinner <bskinner@mit.edu>