The Day Pass gets you unlimited rides from the time of purchase until 2am on all buses and METRO lines.
$5.00 when purchased between 2am - 9am
$4.50 when purchased between 9am - 6:30pm
$4.00 when purchased between 6:30pm - Midnight
$4.00 when purchased on Saturday, Sunday or Holidays
$6.50 Unlimited rides for 24 hours from time of purchase (not valid on Northstar)