TimeandDate.com showing the info for tomorrow and it shows that even though today there is zero sunlight, tomorrow will be 47 minutes. Thing change pretty rapidly at this point. The lightest blue indicates daylight where the sun is actually above the horizon. The next darker shades are civil and nautical twilight. Both are better known as dawn or dusk. As you can see, even on the winter solstice there is not really 24 hours of darkness as some media outlets would lead you to believe.