Daylight saving time changes in Connecticut, United States

Connecticut uses the IANA time zone identifier America/New_York. The current local offset is UTC-4 / EDT.

Best Time to Call Connecticut

Business hours in Connecticut (9 AM-5 PM local time) fall at these local times elsewhere:

• Sao Paulo: 10:00 AM - 6:00 PM ( Convenient)
• Frankfurt: 3:00 PM - 11:00 PM ( Partial overlap)
• Johannesburg: 3:00 PM - 11:00 PM ( Partial overlap)
• Singapore: 9:00 PM - 5:00 AM (next day) ( Partial overlap)
• Hong Kong: 9:00 PM - 5:00 AM (next day) ( Partial overlap)
• Istanbul: 4:00 PM - 12:00 AM (next day) ( Partial overlap)
• Auckland: 1:00 AM (next day) - 9:00 AM (next day) ( Outside normal hours)

Times shown reflect current UTC offsets and may shift by up to an hour around daylight saving transitions.

Current Time in Cities of Connecticut, United States

About Time in Connecticut

The Jeweler Who Was Nearly Arrested for His Own Shop Clock

Connecticut did not just resist Daylight Saving Time in the early 20th century, it made observing it a crime. In 1923, the state legislature passed a law mandating Eastern Standard Time as the sole official time year round and explicitly prohibiting the "willful public display of daylight saving time."

The law produced an almost immediate legal showdown. A Hartford jeweler who set the clock in the window of his own shop ahead by an hour faced arrest under the new statute. He fought the charge, and the case climbed all the way to the Connecticut Supreme Court, which ultimately ruled that the ban on publicly displaying Daylight Saving Time was, in fact, constitutional.

Winning in court did not make the law practical. Church steeples, courthouse cupolas, and public clocks around Hartford kept faithfully showing Standard Time between April and October, but the moment residents stepped through the doors of many ordinary businesses, the clocks inside quietly ran an hour ahead anyway. Legislators eventually gave up trying to enforce the contradiction and quietly repealed the ban sometime in the 1930s. Curtis H. Veeder, a Hartford inventor who publicly defended Daylight Saving Time at the height of the controversy, had made a pointed scientific argument in a letter to the Hartford Courant: Connecticut's official Eastern Standard Time, based on the sun's position over New York City rather than over Hartford, was already about half an hour removed from true local solar time, so adopting Daylight Saving Time barely changed how far the clock strayed from the sun in the first place.

Nine Years of the Same Bill

State Representative Kurt Vail, a Republican from Stafford, has introduced legislation to move Connecticut onto permanent Atlantic Standard Time in nine consecutive legislative sessions, an unusually long personal campaign even by the standards of a topic that keeps resurfacing in statehouses nationwide.

Vail's bill takes the same approach several other Northeastern states have tried: rather than waiting on Congress to authorize permanent Daylight Saving Time directly, it would shift Connecticut's legal time zone one hour ahead to Atlantic Standard Time, achieving the same practical effect without needing federal permission for the daylight saving mechanism itself. The catch, unchanged through nine years of the same proposal, is that it only takes effect once Massachusetts, Rhode Island, and New York pass matching legislation of their own, none of which had happened as of the bill's most recent 2025 session filing.

The dependency reflects genuine economic reality rather than legislative caution for its own sake. Connecticut's ties to New York City in particular run deep enough, through commuting, finance, and daily commerce, that shifting the state's clock alone, without its largest neighbor, would recreate exactly the kind of local versus regional time mismatch that caused Hartford's jeweler so much trouble a century earlier.

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