The year is commonly divided into four seasons: spring, summer, fall (or autumn), and winter. Because we divide a year into 12 months, each season lasts about three months.

Exact time and date of the March equinox and other seasons. When is the first day of Spring and when does each season start?

What Causes Seasons on Earth? Seasons change because Earth's rotational axis tilts away or towards the Sun during the course of a year.

Earth's axial tilt causes different parts of the Earth to receive more or less solar energy at different times of the year, resulting in distinct seasons.

Countries define seasons differently. This calculator refers to astronomical seasons, not meteorological seasons. All times are local time for Seattle.

The Earth does not move at a constant speed in its elliptical orbit, so the seasons are not of equal length. On average, winter lasts for 89.0 days in the Northern Hemisphere and 93.6 days in …

September equinox to December solstice: 89.8 days December solstice to March equinox: 89.0 days Fall or Autumn? Both fall and autumn are correct English terms for the season preceding …

Open the Seasons Calculator and enter a location into the search field near the top of the page. Use the drop-down menu above the table to select a different year range.

United States 2025 – Calendar with American holidays. Yearly calendar showing months for the year 2025. Calendars – online and print friendly – for any year and month

Solstices & Equinoxes for Kolkata ... The Seasons Calculator shows the times and dates of Vernal (Spring) & Autumnal (Fall) equinoxes and Summer and Winter solstices all over the world.