Solstices and equinoxes track precise astronomical moments. Each solstice is when the Sun's day-to-day change in position in our sky stops, and Earth's axis lines up perfectly with the Sun's axis.

There's also astronomical summer, which runs from the summer solstice to the autumn equinox. In 2025, that means astronomical summer will be from June 20 through Sept. 22.

The vernal equinox, marking the first day of spring, occurs on Thursday, March 20, 2025, at 5:01 a.m. ET. An equinox happens when the sun's rays are directly over the equator, resulting in ...

Though equinoxes might not get the same attention as solstices, they're a lovely way to observe the seasons shifting. Let's get to know the vernal equinox, what it is and why it happens.

The Northern Hemisphere’s spring — or vernal — equinox can land between March 19 and 21, depending on the year. Its fall – or autumnal — equinox can land between Sept. 21 and 24.

Therefore, that 'reset' didn't occur, and the equinoxes and solstices have continued to get earlier and earlier with every leap year since. Now, in 2024, the fall equinox is at 8:43 a.m. EDT on ...

First day of spring 2025 is today. What we know on 2025 spring equinox, solstices, more Story by Chris Sims and Janet Loehrke, Louisville Courier Journal • 4d ...

Firstly, these phenomena can be divided into two categories:Equinoxes, and Solstices. An equinox occurs only twice a year, at a specific point in the sun’s orbit–when it crosses the equator.

This is how the Earth and sun work in tandem to create solstices, equinoxes and the four seasons You can save this article by registering for free here. Or sign-in if you have an account. This ...

The winter solstice is celebrated all over the world and has been for thousands of years. It is one of the key occasions when English Heritage allows people near the stones that make up Stonehenge.

This solstice falls between June 20 and 22. Meanwhile, at the winter solstice, the Northern Hemisphere is leaning away from the sun — leading to the shortest day and longest night of the year.