While we’re at it, change documentation and sample site to reflect new date format

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>
remove unused import

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>
hardcode the new date format in a test

Signed-off-by: Chris “Kwpolska” Warrick <kwpolska@gmail.com>