When is the longest day of the year? The longest day and the shortest night of the year in the Northern Hemisphere occur during summer solstice which is usually observed on June 21st or sometimes on June 20 or even June 19 UTC (see table 1). During the June Solstice the sun will appear at its highest and most in the sky. Whilst this delivers the longest day of the year the actual length of this day will vary according to location. Those in more latitudes will experience markedly longer days than those closer to the Equator. Sunrise and sunset times, civil twilight start and end times as well as solar noon, and day length for every day of July in Seattle. The day length shortens by 56 minutes over the course of July 2025 in Seattle, WA - from 15 hours, 58 minutes on the first day to 15 hours, 1 minute on the last day. In tropical areas, the longest day is just a little longer than 12 hours; in the temperate zone, it is significantly longer; and places within the Arctic Circle experience Midnight Sun or polar day, when the Sun does not set at night. The summer solstice, also known as the June solstice arrives June 20 at 4:51 p.m. EDT (2051 GMT), marking the longest day in the Northern Hemisphere. The longest day of the year in Singapore is 12.9 hours long and occurs on the summer solstice - June 21st. * Whilst some sources will show day length as the time between sunrise and sunset we do not feel this accurately represents how long the day is. Our preferred measure is from dawn until dusk, or between civil twilight to use the technical The summer solstice falls late in the day on Friday, June 20 in the United States (it will already be Saturday, June 21 in Europe). It's the longest day and shortest night in the Northern Hemisphere. During the Northern Hemisphere’s summer solstice, the upper half of the earth is tilted toward the sun, creating the longest day and shortest night of the year. This solstice falls between June The Relationship Between Length of Day and Temperature There is a lag between the longest day of the year and the warmest average temperatures for most mid and high-latitude locations. In northern OH/Northwest PA, the maximum daily temperature occurs nearly 3 weeks later in mid-July. July 2025 - Austin, Texas - Sunrise and sunset calendar Sunrise and sunset times, civil twilight start and end times as well as solar noon, and day length for every day of July in Austin. The day length shortens by 27 minutes over the course of July 2025 in Austin, TX - from 14 hours, 6 minutes on the first day to 13 hours, 38 minutes on the last day. The longest day of the year in Sydney is 15.4 hours long and occurs on the summer solstice - December 22nd. * Whilst some sources will show day length as the time between sunrise and sunset we do not feel this accurately represents how long the day is. Our preferred measure is from dawn until dusk, or between civil twilight to use the technical The longest day of the year in Dublin is 18.8 hours long and occurs on the summer solstice - June 21st. * Whilst some sources will show day length as the time between sunrise and sunset we do not feel this accurately represents how long the day is. Our preferred measure is from dawn until dusk, or between civil twilight to use the technical term. The longest day of the year in Oslo is 22.3 hours long and occurs on the summer solstice - June 21st. * Whilst some sources will show day length as the time between sunrise and sunset we do not feel this accurately represents how long the day is. Our preferred measure is from dawn until dusk, or between civil twilight to use the technical term. Dallas will get 14 hours and 19 minutes, and Seattle will get just shy of 16 hours. Remember — the days will be longest farther north, with the fewest daylight hours in the Southern Hemisphere. The longest day of the year in Inverness is 20.4 hours long and occurs on the summer solstice - June 21st. * Whilst some sources will show day length as the time between sunrise and sunset we do not feel this accurately represents how long the day is. Our preferred measure is from dawn until dusk, or between civil twilight to use the technical The summer solstice is the day with the longest period of daylight and shortest night of the year in that hemisphere, when the sun is at its highest position in the sky. At either pole there is continuous daylight at the time of its summer solstice. The opposite event is the winter solstice. Summer gets its official start in the Northern Hemisphere with the arrival of the summer solstice. The sun will trace its highest, longest arc across the sky Friday, making for the longest day and shortest night of the year. During the Northern Hemisphere’s summer solstice, the upper half of the earth is tilted toward the sun, creating the longest day and shortest night of the year. This solstice falls between June This upcoming Amazon Prime Day is a little different than before. Instead of the standard 72-hour sale window, this one is running for 96 hours -- making it the longest Prime Day so far. In Alameda 4th of July Parade: July 4, The Alameda Parade, which is the longest in the country with a length of 3.3 miles, will begin at 10 a.m. and feature 2,500 participants and 60,000 spectators.
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