What about spring and autumn?In March ang in September,there is a special day.On these two days,the sun gives us twelve hours of light.Then we have twelve hours of darkness.Day and night are equal. At school,our science teacher teaches these things to us.He teaches us these days'names.We have to remember them and weite them and write them.Tomorrow,he will give us a quiz.I should study the names again.Or can you tell me the names of these days?