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Does it get darker than astronomical twilight at night in any part of Denmark around the June solstice?
No. The southern border of Denmark is at 54 degrees 44 minutes north.
Wikipedia sez: "Astronomical twilight is defined to begin in the morning, and to end in the evening when the center of the Sun is geometrically 18 degrees below the horizon."
At midnight in the June Solstice, the Sun is at a declination of 23.5 degrees (approximately), so the over-the-pole angular distance is (90-54.5) + (90-23.5) degrees, or 102 degrees. The horizon is 90 degrees, so the Sun is 15 degrees below the northern horizon at midnight on June 21.
So, no, it won't meet the definition for "darker than astronomical twilight".
What else can I help you with?
Is 51 degrees north far enough south for astronomical twilight to end on dates near the summer solstice?
The Southern tip of Ireland is about 51 degrees North. That is not far enough South for astronomical twilight to end on dates near the summer solstice. (The Sun never sets at latitudes above about 66.5 degrees, at the summer solstice. Astronomical twilight ends with the centre of the Sun 18 degrees below the horizon. That means you would need to be around 48.5 degrees North to get full darkness at the summer solstice.)
When does summer start and end in Denmark?
Summer in Denmark typically starts around June 21st, which is the summer solstice, and ends around September 23rd, which is the autumnal equinox. These dates mark the astronomical beginning and end of summer in the Northern Hemisphere.
Does astronomical twilight end near the summer solstice when observed from Greenwich England?
No. Around the Summer Solstice, "astronomical twilight" lasts all night for everywhere in England. The southernmost point in England is Lizard Point, in Cornwall, at 49 degrees 57 minutes North.(Call it 50 degrees even, to make the math easier.) Around the Summer Solstice on June 21, the Sun is at a declination of 23 degrees 26 minutes. (Let's round that off to 23.5 degrees.) At midnight, the Sun is at 23.5 degrees North over the Pacific Ocean. That means that from Lizard looking north at midnight, the Sun is (90-50) + (90-23.5) degrees = 40+ 66.5 degrees =106.5 degrees away. That means that the Sun is 106.5-90 degrees below the horizon. "Astronomical Twilight" is defined as the Sun being less than 18 degrees below the horizon. On June 21, the Sun is only 16.5 degrees below the horizon at Lizard, and less than that anywhere else in England. So around the Summer Solstice (about a week either side of it, actually) the Sun is never more than 18 degrees below the horizon from anywhere in England, Scotland or Ireland.
What are the different types of solstice?
There are two types of solstice — summer solstice and winter solstice. Summer solstice occurs around June 21st in the Northern Hemisphere, marking the longest day of the year. Winter solstice occurs around December 21st in the Northern Hemisphere, marking the shortest day of the year. These astronomical events signify the changing of seasons.
What astronomical term literally means sunstop?
The astronomical term that literally means "sunstop" is solstice. This refers to the point in the Earth's orbit around the sun when the sun reaches its highest or lowest point in the sky, resulting in the longest or shortest day of the year.
What is the definition of soltice?
A solstice is an astronomical event that occurs twice a year when the Sun reaches its highest or lowest point in the sky at noon, resulting in the longest and shortest days of the year. The two solstices are the summer solstice (around June 21st) and the winter solstice (around December 21st), marking the beginning of summer and winter, respectively.
What is a winter solice?
The winter solstice is the shortest day and longest night of the year, marking the official beginning of winter in the Northern Hemisphere. It occurs around December 21st each year and is one of the four major astronomical events that mark the Earth's changing seasons. People around the world celebrate the winter solstice with various cultural and religious rituals.
What is the time of year when the sun is the northern most point on the ecliptic?
solstice
What is Astronomical seasons?
Astronomical seasons are divisions of the year based on the Earth's position in relation to the Sun, primarily defined by the equinoxes and solstices. They are characterized by changes in daylight and temperature, leading to distinct seasonal patterns. The four astronomical seasons are spring, summer, autumn (fall), and winter, which correspond to specific dates: the vernal equinox marks the start of spring, the summer solstice begins summer, the autumnal equinox signals fall, and the winter solstice marks winter. These seasons occur due to the tilt of the Earth's axis and its orbit around the Sun.
When are the two solstices in the northern hemisphere?
The summer solstice is on or around June 21st and the winter solstice is on or around December21st.
Which of these events signals the beginning of winter in the?
The beginning of winter in the Northern Hemisphere is officially marked by the winter solstice, which occurs around December 21st or 22nd. This day has the shortest amount of daylight and the longest night of the year. In some cultures, the first snowfall or specific astronomical events may also signify the start of winter. In the Southern Hemisphere, winter begins around June 21st with its own solstice.
What is the summer solstice at Stonehenge?
The summer solstice at Stonehenge occurs around June 21st each year when the sun rises behind the Heel Stone and its rays align with the center of the monument. This alignment is believed to have had symbolic and ritual significance for the ancient builders of Stonehenge. The summer solstice at Stonehenge attracts thousands of visitors who come to witness the sunrise on this important astronomical event.
