“Summer Solstice” comes on June 21 to June 22 each year when the sun altitude arrive the highest in north. This day has the longest day time of the year in the Northern Hemisphere and the sunshine in many cities in south China may last fourteen hours per day.After this day, the spot of the direct sunlight gradually moves southward.“
Although, this day has the longest daylight, it’s not the hottest. As traditional Chinese books described, there are three periods of the hot season. It starts around “Summer Solstice” and ends around “Autumn Begins”. The temperature rises day by day and the hottest days come around mid-July to mid-August, where temperatures of some cities in China reach 40 degree Celsius.
In some provinces, there is the tradition of eating cold noodles on this day. According to old customs in Beijing, when it comes to “Summer Solstice”, people can eat cold noodles to stimulate the appetite and at the same time don’t need to worry about having diarrhea.
During this period, to comply with the Yin and Yang in the natural world, people should sleep late, get up early and have a nap during the lunch time. Aged people should make sure they have at least seven hours sleep every day by sleeping early and get up early. Actually most of the people feel tired and sometimes even headache during this period. This is because when the temperature rises, people can only send out the heat by perspiration, which may cause dehydration and thus the insufficient blood supplying to the brain. Therefore, remember to drink a lot of water if feeling uncomfortable.