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

The summer solstice marks the beginning of astronomical summer each year, typically falling between June 20 and June 22. In meteorology, the official start of the summer season is June 1, marking the ...

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 ...

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

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 ...

The fact that the Earth’s axis is pointing at a right angle to the Sun – neither toward it or away from it – is true for the entire planet, not just for dwellers in one hemisphere or another.

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 ...

The winter solstice falls between December 20 and 23. The equinox is when there is an equal amount of day and night During the equinox, the Earth’s axis and its orbit line up so that both hemispheres ...

What are solstices? Solstices occur because Earth’s axis of rotation is tilted about 23.4 degrees relative to Earth's orbit around the sun. This tilt drives our planet's seasons, as the Northern ...