In spring it is known as the vernal equinox, and in fall the autumnal equinox.

春天是春，秋天是秋。

This year's equinox was on September 22nd.

今年秋是9月22日。

Very long and very severe were the equinoctial gales that year.

那年秋时刮得久，刮得猛。

The harvest moon is the full moon that occurs closest to the autumnal equinox.

丰收月是最接近秋满月。

Every spring and every fall, the calendar marks the equinox—and you may ask, what is an equinox?

每个春季和秋季，日历上都会标明春和秋，你或许会问，什么是春和秋？

The closest full moon to that was right at the beginning of October.

而最接近秋满月正好是10月1日。

Equinoxes are directly related to the changing of the seasons.

春和秋跟季节变有接关系。

It was in the latter days of September, and the equinoctial gales had set in with exceptional violence.

那时正值九月下旬，秋时节雨猛烈异常。

In fact, the full moon nearest the autumnal equinox is commonly referred to as the harvest moon.

事实上，最接近秋满月通常被称为收获月亮。

Yesterday was officially the autumnal equinox in the northern hemisphere, and the vernal or Spring equinox in the southern one.

昨天是北半球秋，南半球春。

Samhain marked the halfway point between the autumn equinox and the winter solstice, the beginning of the new year.

夏末节标志着秋和冬至中间点，也是新一年开始。

A harvest moon is a full, bright moon that appears " closest to the start of autumn, " NASA explains.

NASA解释说，获月是指“最接近秋”满月。

Following the September equinox, the sun had emerged above the northerly horizon, rising in long spirals until December 21.

从九月中秋日起，它在北方天际出现，沿着长长螺旋线上升，到12月21日。

It's time to say goodbye to summertime because today is officially the first day of fall, also called autumnal equinox.

到了和夏季说再见时候，因为秋季从今天正式开始，今天也被称为秋。

In September there is what we call the " autumnal equinox."

九月是我们所说“秋” 。

Happening on September 22nd this year, the autumnal equinox marks the first day of fall for those living above the equator.

今年9月22日就是秋了，标志着赤道以北地区进入秋季。

Eventually people shifted the date from the September equinox to the 15th day of the 8th month on the Chinese lunar calendar.

最终，人们把祭祀日期从秋时节改到了农历八月十五。

During the year, there is a spring equinox and the fall equinox.

季节。 一年之中，有春和秋。

The Aurora Borealis or Northern Lights are usually more active during the equinoxes according to a solar physicist interviewed by CNN.

一位接受CNN采访太阳物理学家表示，在秋期间，北极光通常更加活跃。

During an equinox, the length of the day and the length of the night are approximately the same, about 12 hours each.

在春和秋这一天，白天长度和夜晚长度几乎相等，都大约为12小时。