What calendar system do we use to determine the summer solstice?

In Chicago, there are 15:02 hours of daylight on the summer solstice of June 21, 1999. The above plots show how the date of the summer solstice shifts through ... Celebrate the summer solstice in Times Square with free yoga classes from sun rise to sunset on the longest day of the year! Jun 21, 2023 ... The path of the sun across our sky – from about noon to sunset – on 3 different days of the year, an equinox and the summer and winter solstices ... May 31, 2024 ... At that time, the Chicago area will have approximately 15 hours of sunlight. What is the summer solstice? The summer solstice is the time when ... The amount of solar radiation reaching Earth (in the northern Hemisphere) peaks at the summer solstice on June 21, but temperatures tend to keep increasing into ... Jun 20, 2024 ... Thursday marks the summer solstice, also known as the longest day of the year when it comes to the amount of daylight that we see. Walk The Morton Arboretum's trails on the longest day of the year. Visit natural areas, take in spectacular trees, and fill your lungs with fresh air. Jun 13, 2024 ... Summer solstice officially begins Thursday, June 20, marking the astronomical first day of summer in the Northern Hemisphere. Jun 18, 2024 ... When is the summer solstice? This year's summer solstice will arrive this Thursday on June 20 for the Northern Hemisphere, according to NASA. Mar 20, 2025 ... Summer solstice, the two moments during the year when the path of the Sun in the sky is farthest north in the Northern Hemisphere (June 20 or 21)