We love the sunbeat and heat of a summer afternoon, the gentle warmth and lasting daylight of a summerâ€™s evening. But is there a definition to 'summer'? Who decides when our favourite season starts and when it ends? Well, actuallyâ€¦ it is the sun itself. Donâ€™t worry if you donâ€™t recall learning about this in science, we donâ€™t either! Maybe we missed that classâ€¦ So to catch up on this cool bit of science, we took to the web to learn about astronomy basics:
We call summer â€˜solsticeâ€™, the day when the sun is seen at the highest in the sky from the north pole. This day, the 21st June is consequently the longest day of the year. Six months later, on 23rd December, the winter solstice is the day when the sun is seen at the highest in the sky from the south pole, in other words, the longest night in the year.
Summer and winter solstices are, astronomically speaking, the very start of each season. Both last until respectively autumn and spring, as equinox occurs. Technically, an equinox is the moment when the rays of the sun, are perpendicular to the equator (when daylight almost matches nighttime period).
In short, summer is the season that starts on the longest day of the year on 21st June and lasts until 21st September.
Good old science!