Seven in the evening is sunset at midsummer. In late June the sun sets a little after 7 pm — the latest it ever does here — which makes this the hour the summer evening finally becomes usable, and the beaches and running tracks refill in the dark.
In December the same hour is already an hour into full night, and the difference between the two is the clearest seasonal contrast the Emirates produce.
It is early for dinner locally: restaurant kitchens fill from about eight and stay full until eleven, so a seven o'clock table is the quiet one. In the cooler months the outdoor festivals and night markets are opening around now, and the traffic heading for them builds from the same point. The count resets every twenty-four hours.
Common questions
Is 7 pm before or after sunset?
Both, depending on the month. In late June the sun sets just after seven; in December it set more than an hour earlier.