{d 'yyyy-mm-dd'}
-- e.g.
WHERE arrivalDate < {d '2002-12-31'}

{t 'hh:mm:ss'}
-- e.g.
WHERE arrivalTime < {t '23:59:59'}

{ts 'yyyy-mm-dd hh:mm:ss'}
-- e.g.
WHERE arrivalTimestamp < {ts '2002-12-31 23:59:59'}