Injuries from dance span all ages, but the risk of injury is greatest during a young dancerâs growth spurt. This is usually between the ages of 8 to 12 for girls and 10 to 14 for boys. During this period, a childâs bones are the weakest, which places the dancer at high risk for fractures (broken bones) and stress fractures (small cracks in a bone).
Since summer (and other seasons) can begin and end on different days each year on the astronomical calendar, it can be hard to compare seasons from year to year in this way. To standardize the length and start of the seasons, in meteorology, the 12 months of the year have been split up into four, 3-month periods. Therefore, in the meteorological calendar, summer includes the months of June, July and August - always starting on 1 June and ending on 31 August.
About The First Day of Summer. In the United States and the rest of the northern hemisphere, the first day of the summer season is the day of the year when the Sun is farthest north (on June 20th or 21st). This day is known as the Summer Solstice. The declination of the Sun on the Summer Solstice is known as the tropic of cancer (23Â° 27â²).