I bought two of these books for gifts on separate occasions. (amazon.co.uk)
Meanwhile the exact same number has cropped up on eight separate occasions for Wolves this season, scoring Exactly 1 Goal in eight of their first fifteen league matches. (football-bookmakers.com)
I also think people will view an item of interest (particularly higher value items) on a number of separate occasions before committing to purchase. (blog.folksy.com)