Dean,
I don't know if you were flying a club aircraft, if you were the CFI might have been interested in your actions.
Firstly if you had been night qualified you would have known that it can be light at altitude and much darker close to the ground.
Secondly I hope you had an alternate airfield that you could reach before the onset of official night.
Get that qualification or take care close to the end of these short days. So glad you enjoyed it, flying close to sunset can be rewarded with some of the most beautiful views.