I'm personally a fan of the 12 hour format for casual conversation and 24h for anything else. 4 PM or 4 in the afternoon sounds better than 16:00 for casual speak imo.
But man, I'm bad with the 24h format lol. I often need to consciously correct myself in that 18:00 =/= 8 PM.
Yeah, I had no idea what was going on until I read this comment.
Upon closer inspection the stripe is clearly white on the first image, but the second one really threw me off because it looks the same color as the floor. I'm also slightly colorblind so that probably doesn't help.