AccuWeather Melissa Constanzer explains the meteorological calendar, how it helps keeping records and why the seasons change.

When does winter start? It depends who you ask, because meteorological season's start date is different than the winter ...

What space events are going to happen in 2025? Here's an astronomical calendar of every full moon, supermoon, meteor shower, ...

While Meteorological winter began Dec. 1, Astronomical winter doesn't start until later in December, when the Winter Solstice ...

The winter solstice is on Saturday, Dec. 21, in the Northern Hemisphere, marking the astronomical seasonal change from fall ...

The December solstice marks the start of winter across the Northern Hemisphere, but meteorologists commonly consider a different date to mark the beginning of the new season. On the day of the ...

December has the longest nights of the entire year, providing more time for stargazing. However, it also brings an uptick in storms and clouds, which can make it challenging to view some of the ...

Sunday, Dec. 1 marked the start of meteorological winter. This period of dry weather is expected to continue through the ...

The winter solstice is the shortest day and longest night of the year. Here's what Arizonans are asking about the solstice ...

Note: Moon phases in the calendar vary in size due to the distance from Earth and are shown at 0h Universal Time. Credit: Astronomy: Roen Kelly The moonrise and moonset schedule this week The ...