I found this thread, which describes the same problem: http://forum.tp-link.com/showthread.php?92019-Smart-bulb-has-wrong-date I went to Support and Online Chat and explained the problem and was...

I figured out my problem: the bulbs know what time it is, but they have the wrong date and the date can't be changed through the app (from what I can see so far).

Strangely, it did work this morning. Will it work next time?

Model : Hardware Version : Firmware Version : ISP : I had the Kasa scheduler controlling one of my bulbs and it was working fine. Earlier this week it has given up and the scheduler no longer works...