"Getting dark, and still an hour away"...

...!
A bit worrying!....

...!
Made me think of the flight rules for a VFR-only Pilot, regarding flying during daylight only hours....
...early morning (dawn) time, until late evening (dusk) time.
I tried to find the actual dawn and dusk times listed, but no luck.
Anyone remember what the VFR Flight Rules are, regarding daylight only flying?
Paul...Daylight hours only for me....(I'm afraid of the dark!)...
Win 8.1 64-bit. DX11. Advent Tower. Intel i7-3770 3.9 GHz 8-core. 8 GB System RAM. AMD Radeon HD 7700 1GB RAM. DVD ROM. 2 Terra Byte SATA Hard Drive. Philips 17" LCD Monitor. Saitek Cyborg X Fly-5 Joystick. ...and a Briggs and Stratton Petrol Lawn Mower.