What's summer time?

I was gone to Egypt last year. It was amazing travel. Egypt was full of spiritual power. I noticed everything in Egypt has its soul, And they spoke universal language even sand of the desert.
The guy smoking sheesha(Arabic traditional water pipe) in the picture is me. I was waiting for the time the bus leaves from cairo to Luxor. It was still early. That's why I was smoking sheesha. Sheesha was really nice. specially apple mint was amazing... But the driver of the bus came to me. He was terribly upset. I didn't understand why. It was still half hour to the time. I had same problem every time when I was waiting for the bus in Egypt. But finally I realized the reason just before leaving Egypt. It was summer time. I didn't know it.