At noon, December days seem routine. However, the early dark is waiting.
My diversion this year is to expect and observe as twilight begins the day and departs after sunset. Civil twilight defined as the sun six degrees below the horizon.
In Alaska in the summer civil twilight never gave way to nautical twilight. We could read a newspaper for weeks (middle May to July). Continuous sun above the horizon or less than six degrees below the horizon.
