The series is filmed at Network Ten studios in South Yarra, Melbourne in front of a live studio audience. The series was originally filmed on a Saturday, but successive seasons saw filming moved from Mondays to Sundays. Filming the day prior to airing, the series aims to be as current as possible. Due to the potentially offensive or inappropriate answers given by guests, alternate endings are filmed should episode winners change during post-production when such answers are excluded from airing.

When is have you been paying attention filmed? Okie... think carefully first, then make a decision:
The relevant sentence in the passage is: The series was originally filmed on a Saturday, but successive seasons saw filming moved from Mondays to Sundays. So, the answer is Sundays.