I am on the everyday plan which says from here
http://help.slingshot.co.nz/app/answers/detail/a_id/1582/~/what-are-the-free-off-peak-downloading-times-on-slingshot-broadband%3F
free off peak during 4-8am which seems to have been untrue ever since i signed up with slingshot a few weeks ago
my usage data goes up everytime i check it during these hours and it cant be any other times
because for the past 4days ive only used my computer between these times
nothings free and i knew it would be too good to be true usage meter is still climbing and its 7am .