How common is morning sickness? During early pregnancy, nausea, vomiting and tiredness are common symptoms. Around half of all pregnant women experience vomiting, and more than 80% of women (80 out of 100) experience nausea in the first 12 weeks.
Autumn is the season when warm summer temperatures gradually decrease to the cold of winter. Autumn, or fall, begins on the autumnal equinox, when the hours of daylight are equal to the hours of darkness. In the Northern Hemisphere this occurs on September 22 or 23.
For the Northern Hemisphere, the fall equinox is the moment when summer ends and fall (autumn) begins, while for the Southern Hemisphere it is the moment when winter ends and spring begins. In the Northern Hemisphere the fall equinox occurs every year on September 22 or 23. Very occasionally it can also fall on September 21 or 24. The dates given on this page are based on Coordinated Universal Time (UTC), which for practical purposes is equivalent to Greenwich Mean Time (GMT).