Actually none of the official sources confirmed this date as far as I know, only some people on Twitter claimed that.Weather can be predicted 1 week, 10 days ago
Edit = I'm in Eskişehir now, despite the bad weather, F16 and training planes are flying over my head. Also, there are sounds from TEI that don't stop for hours most days, we're used to it now, I don't know what the sound is, but it gives me a headache. My place is 50 meters from TEI