Time in Boston follows the USA time zones. There are six time zones in USA: Eastern Time, Central Time, Mountain Time, Hawaii Time, Alaska Time and Pacific Time. Boston follows the Eastern Time of USA.
Greenwich Mean Time (GMT) is the reference time and it does not vary with the change of seasons. The time of a place is calculated with reference to GMT. The geographical position of a place determines the time of a particular place. Boston is geographically located between 42° 21' 30'' North Latitude and 71° 3' 37'' West Longitude. The standard time of Boston runs five hours less than the Greenwich Mean Time (GMT). Thus to calculate the time in Boston, people subtract 5 hours
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from the GMT(GMT-5).
The Eastern Standard Time of Boston (EST) = GMT-5 and Eastern Daylight Time of Boston (EDT) = GMT-4. The time difference between Boston and London is 5 hours and the time difference between Boston and Paris is 6 hours.
During the winter season, specially in December, sunrise in Boston takes place nearly at 6:53 am in the early part and approximately at 7:13 am in the end of the month. On the other hand, the sunset in Boston varies between 4:13 to 4:21 pm during the month of December. The length of the day during the winters is approximately 9 hours.
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