Some events that signal the beginning of summer are:
The Summer Solstice in the northern hemisphere, where the sun is highest declination.
The beginning of summer in the Northern Hemisphere is marked by the summer solstice, which occurs around June 21st. This is the longest day of the year, when the sun reaches its highest point in the sky. Additionally, rising temperatures, longer daylight hours, and the blooming of various plants and flowers are also signals of the arrival of summer. Cultural events and seasonal activities, such as outdoor festivals and vacations, further signify the onset of the season.
Maybe the right grammar there is 'at the beginning of summer'. Unless you are using a sentence with the phrase 'at the beginning of the summer vacation', that's when you're supposed to use 'the' before the word 'summer'.
The spring equinox
the vernal equinox
Summer solstice.
Summer Solstice (A+ Anywhere)
winter solstice
The Summer Solstice in the northern hemisphere, where the sun is highest declination.
Uneven bars in artistic gymnastics
The Summer Solstice in the northern hemisphere, where the sun is highest declination.
The beginning of summer in the Northern Hemisphere is marked by the summer solstice, which occurs around June 21st. This is the longest day of the year, when the sun reaches its highest point in the sky. Additionally, rising temperatures, longer daylight hours, and the blooming of various plants and flowers are also signals of the arrival of summer. Cultural events and seasonal activities, such as outdoor festivals and vacations, further signify the onset of the season.
Maybe the right grammar there is 'at the beginning of summer'. Unless you are using a sentence with the phrase 'at the beginning of the summer vacation', that's when you're supposed to use 'the' before the word 'summer'.
The calendar is intended to mark the number of years since the death of King Herod the Great. The Roman abbot Dionysus Exiguus devised the new Christian calendar in 533. He knew that it was impossible to say when Jesus was born, but he knew, or thought he knew, when Herod died. So, he chose to begin his Christian calendar on the year of Herod's death, and he based this on the reign of the Roman emperor Augustus. Unaware that Augustus only adopted that name four years after his reign began, going by his birth name of Octavius until then, Exiguus commenced his calendar just 4 years too late.
Vernal
autumnal equinox
The beginning of astronomical Summer in the nothern hemisphere is the moment when the center of the sun reaches the northernmost extent of the ecliptic in the sky, known as the solstice, on June 21 or 22.