A leap second is a one-second modification that is sometimes used with atomic clocks, whenever there is a change in Earth's ...

Friday is the longest day of the year north of the equator, where the solstice marks the start of astronomical summer.

Scotland: To describe how the Earth spins around its axis in 24 hours resulting in day and night. Demonstrates understanding of how the Earth takes one year to completely orbit the sun.

This misalignment happens because Earth is tilted on its axis, and we orbit the sun in an ellipse, not a perfect circle. Together, these two factors cause our 24-hour clocks to get slightly out of ...

The first day of autumn, caused by the fall equinox, happens on Sunday, September 22, 2024. The equinox happens when the sun's rays square up with Earth so the day is about as long as night. From ...

Traditionally, the solstice marks the longest day and the start of summer. The event has fascinated civilisations for thousands of years.

The time for the Moon to revolve around the Earth is about 27.3 days, while the Earth rotates once around its axis in 24 ...

The 2025 summer solstice takes place on June 20, heralding the onset of astronomical summer and the longest day of the year.

In the northern hemisphere, it typically falls on June 21, but the date of the solstice can range between June 20 and June 22. The summer solstice in 2025 will occur on Saturday, June 21. The exact ...

A shorter day on Earth. In terms of time, NASA estimated that the earthquake shortened the length of a day by about 2.68 microseconds, which is less than a blink of an eye. While 2.68 microseconds ...

For those north of the equator, the solstice marks the longest day and the shortest night of the year. The Earth spins on a ...

Friday, June 20, is the longest first day of the year north of the equator, where the solstice marks the start of ...