Help! Where are these glow in the dark tiles from?

Captain_chaos · 2018-10-24T22:09:52.000Z

I'm currently trying to build up the Diagon Alley set from my haul and I've run into a snag. It doesn't look like any of the glow in the dark transparent 1x2 tiles are present, but instead I appear to have these glow in the dark white tiles. Where are they from? Are they a special variant in the Diagon Alley set? I can't seem to get much help from Bricklink. They are definitely real Lego, even if that doesn't show in the image. Thanks.