How the orbit of the Moon around the and the Earth around the sun, impact day length, months and seasons. Learn what a year is with this guide for KS3 physics students aged 11-14 from BBC Bitesize.

Every three months, a new season begins—twice. Spring creeps in like a lion on March 1, and then again a few weeks later with the equinox.Likewise, some people welcome the arrival of summer on ...

If we had 365 days in a year each year, each passing century would throw our calendar out of whack by almost a full month. If we put a single Leap Day every four years, we'd account for 365.25 ...

Summer doesn’t always end on the same day every year, because the end of summer is tied to the autumnal equinox in the ...