For ex. Paris +1h versus New York -5h, there is a difference of 6 hours, so Paris is always 6 hours ahead New York in standard time. Paris, Europe and New York, US coincide in standard time from the 1st Sunday of November (End of US Daylight Saving Time) until the 2nd Sunday of March of the following year. (Start of US Daylight Saving Time).
The Clock time is updated with the time change, along with the time zone and summer or winter symbols. + info.
Several states in the Eastern US (Central ← Eastern) and Central US (Mountain ← Central), have locations that use the contiguous states time zone.
The United States observes daylight saving time in almost all States, except for most of Arizona UTC -7h, and the Hawaiian Islands UTC-10h, which maintains the same time zone throughout the year.
Daylight saving time in US begins on the second Sunday in March, at 2:00 a.m., moving the clock forward 1 hour and returning to winter or standard time on the first Sunday in November, at 2:00 a.m., turning the clock back 1 hour. US map.