Last Sunday, we changed the clocks an hour ahead and shifted sunset well after 7pm in Columbia. For some reason, the mornings seemed much darker than normal. Granted the time change moved the time of sunrise from 6:44 am to 7:44 am, but I don't recall it being as dark in past years. For comparison, the latest the sun rises in December/January is 7:30am. We get back to that time around March 18th. I've lived in Columbia several years now, so I figure the westward/southward location compared to Long Island shouldn't have as great an effect on me.
For all intents and purposes, we've shifted to Central Standard Time in the east. Through college, DST began on the first Sunday of April. In 2015, that would have shifted the start of DST to April 5th, when the sunrise is at 6:06 / 7:06 am. I was living in NY for one year (2007) after the new schedule of switching the second Sunday in March was enacted. The timing there works out to move sunrise to exactly when the latest time occurs in the winter (7:06am, using Bridgeport, CT as an estimate).
Of course none of this really matters long term, next year the change is made March 13th, when sunrise will be at 7:37am. I find it funny that I went to such an extent looking up the late sunrise times because I am more of a night person, and generally enjoy the later sunsets. What it really probably comes down to is having a dog now that is more in tune with being fed early in the morning.
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