In that scenario we'd mention "the Saturday afternoon" or "the Friday night", having an implicit "in the event". In line with what Kyle said, we could only say "on" with these, not "in". as promo stuff I heard was stickers and so forth provided out by Flickr mid past decade, https://elliotteqjk11196.dailyblogzz.com/37135503/not-known-details-about-lifeline-program