Summer time solstice 2023: When is it and what causes the 12 months’s longest day?
Here is when the summer time solstice takes place this 12 months, what it represents, and why Stonehenge is so essential.
Stonehenge, UK
Get out these sandals, BBQs, and solar hats as a result of the summer time solstice 2023 is lastly right here! Whether or not you prefer it or not, we’re now midway by means of the 12 months, with the summer time solstice marking the astronomical begin of the season. Extra particularly, the summer time solstice indicators an essential second within the calendar for a lot of and it’s no totally different in 2023. However when is it precisely? What does it imply?Â
When is the summer time solstice in 2023?
The summer time solstice in 2023 will happen on Wednesday 21 June at exactly 3:58pm BST within the UK and 10:58am ET / 7:58am PT within the US. Opposite to widespread perception, the solstice is an actual second and never the whole day. The occasion takes place on the primary day of the astronomical summer time season and marks the precise level the northern hemisphere is pointing immediately in the direction of the Solar. It additionally marks the longest day of the 12 months, with the best variety of sunlight hours seen in a single day in 2023.Â
When is dawn for the summer time solstice?
On Wednesday 21 June, the day of the summer time solstice, dawn will probably be at 4:43am in London (BST). Instances will fluctuate barely within the UK, with Edinburgh’s dawn at 4:26am (BST). Within the US, the dawn will rely in your location. New York Metropolis summer time solstice dawn time: 5:25am (EDT) Austin, Texas summer time solstice dawn time: 06:29 (CDT) Los Angeles, California solstice dawn time: 05:42 (PDT)
Counterintuitively, regardless that 21 June is the longest day of the 12 months, it isn’t the day with the earliest dawn. “The earliest dawn really happens 4 days earlier, and the most recent sundown happens 3 days later,” Dr Darren Baskill, an astrophotographer and astronomy lecturer on the College of Sussex, says. “This slight distinction is brought on by the Earth orbiting the Solar not in a circle, however in a slight ellipse.”
What’s the summer time solstice?
The summer time solstice takes place on the precise second the Solar reaches its highest level within the sky, which is when the northern hemisphere is tilted most in the direction of the Solar. Primarily, it marks the purpose when the Solar’s rays hit this a part of the Earth most immediately. “The summer time solstice happens for the northern hemisphere when the Earth strikes into such a place that its North Pole is pointing within the path of the Solar, making the Solar excessive within the sky,” says Baskill. “On the identical time, the South Pole of the Earth is pointing away from the Solar, and so the southern hemisphere have their winter solstice on the identical day.” The Earth’s axis has a tilt of round 24°, relative to its orbit across the Solar.Â
The summer time solstice shouldn’t be essentially the most popular day of the 12 months. Often, the most popular day of the 12 months is in July or August. It’s because oceans and land lots launch the warmth absorbed from the longer days again into the environment.
Why is the Earth tilted?
We get a summer time solstice as a result of the Earth’s North Pole is tilted at round 24° from the vertical, in contrast with its orbit across the Solar. For a similar cause, the Arctic Circle will get the Midnight Solar: on the summer time solstice, and for longer additional north, the Solar is seen above the horizon all evening lengthy.
However the place does the Earth get its tilt?
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The summer time solstice is marked around the globe by totally different teams and cultures, however essentially the most well-known occasion arguably takes place at Stonehenge within the UK.
Whereas many mysteries stay concerning the historical stone circle, we do know that the monument is structured to mark the place of the rising solar on the solstices (whether or not that was its authentic intention or not). As such, 21 June 2023 marks the one day the location has free (managed) open entry for vacationers and people wanting to absorb the particular and sacred occasion.
Different summer time solstice occasions around the globe embody Midsummer, which is a crucial date in Sweden and the opposite Scandinavian nations.
What’s the distinction between an equinox and a solstice?
Do some other planets have solstices?
Yep, different planets do certainly have solstices. Simply the identical as on Earth, when any planet’s northern pole reaches its most tilt in the direction of the Solar, the summer time solstice occurs and its winter solstice takes place when the southern pole does the identical.
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