If you are taking #5 Westbound it will be daylight from Denver to Grand Junction and from Reno to Sacramento through the Sierras! #6 Eastbound has been running late more often but youd leave Emeryville in the Morning and see the Sierras in Daylight! The Desert in Nevada and Utah is at night/if #6 is late it will get Dark nefore Denver but the Descent doen the Front Range imto Denver all lighted is cool! The Praries East of Denver, thru Nebraska, Iowa and Illinois isnt that interesting except for crossing the Missouri and Mississippi Rivers! Go for it, great trip with the Snow and not crowded exvept for Thanksgiving!