I've been noticing a lot of dayburners here lately. I saw that American Electric 15-000 which has been dayburning about two years. There are also two MV NEMA heads that have been dayburning, one of which has dayburned since 2007 at least.

Plus on a newer road yesterday I saw one of those AEL ATB2 LED is dayburning already, it just over a year and a half old and already dayburning! The first LED dayburner I've seen.

There were also two Westinghouse 4th gen OV20 HPS I saw a few of dayburning a while ago.

The HPS parking lot lights and wall packs on Home Depot have been dayburning for a few months too. IDK why they haven't fixed it still!

I've seen lots of Affinity lights dayburning around here, I think the photocells are junk. I've seen new black PCs being installed on them all the time.

I've been seeing a lot of dayburning Cree RSW LEDs in San Jose, even though most of them are only a few weeks old. But I think in this case, I suspect someone may have put shorting caps on fixtures that should have had real photocells, since lights at intersections with traffic lights are usually group controlled by a single photocell, whereas every other streetlight is individually controlled.