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In reply to the discussion: Some New England lawmakers propose leaving Eastern Time [View all]muriel_volestrangler
(106,577 posts)Here's a chart of sunrise and sunset for Kansas City for the year: http://www.gaisma.com/en/location/kansas-city-kansas.html

With the 'standard' time in winter (ie GMT+6, which is the 'correct' zone for longitude 94.6 degrees W - it should cover 82.5 to 97.5 degrees), your latest sunrise is about 7:30. They shouldn't let DST go on so long (or start so early) that it pushes sunrise after that - so it ought to end in mid-October at the latest, for Kansas City. Places further south either need it ending earlier still, or not to switch at all.
But, for you, if you want an 8 hour fixed time in bed that starts after it's properly dark, and ends after it's properly light, you have to get up after 7:30am, even without any switching. Any time after then, with 8 hours sleep, would also have you going to sleep after it's dark.
(If all the continental US used DST, then the furthest south area, around Miami, ought to show that it should last from the end of March to the end of September. The USA ought to move the start of DST to the date Europe uses - last Sunday in March - and both continents ought to use the last Sunday in September to stop.)