If it's on time, 449 should cover the best mountain scenery between about 3:30 and 5 p.m., so it should be all in daylight except for a few weeks near the winter solstice, when you might miss the last 20 minutes or so. It leaves Springfield at 3:23, Pittsfield at 4:39. For nearly all of the year, it's light till at least 5 p.m. I do think the descent into the Hudson Valley is rather impressive too, so it would be better to go at a time of year when it's light till 6 p.m., but that covers nearly all of the Daylight Savings Time period except the end of October.