I can’t get to grips with the astronomical calendar. That gives us Spring starting on the equinox, March 20th. Summer then begins with the solstice which is June 20th this year. Mid summer’s day, by tradition and one of the legal quarter days, is June 24th which must mean, if summer starts on the 20th and has its mid point on the 24th, summer ends on June 28th. Some years that seems about right.
This is the explanation from the Royal observatory Greenwich.
"When the northern hemisphere is tilted towards the Sun, it receives more direct sunlight and for a longer portion of the day, so the temperature increases. Similarly in winter, the reduction in sunlight hours and more glancing angle to the Sun means the air remains colder.
However, just as with the air in your home, the atmosphere and, more importantly, the oceans take time to heat up. This means that even though the solstice marks the longest or shortest days (and the most direct or indirect sunlight), there is a considerable lag between that and the peak of warm or cold weather. As a result, meteorological (weather-based) summer starts at the beginning of June and ending with the last day of August. Astronomical summer can either begin on the solstice, or, if using length of days as a guide, be centred on the solstice, depending on the situation. "
I was following it confidently till the last line, which seems a tad contradictory. 😂 I am going with 1st of March/June/Sept/Dec as the start of my seasons. 👍
@ViewAhead I'm going with your perfectly reasonable seasons. In addition, I will continue to use Celsius to prove how cold it is and Fahrenheit to prove how hot it is.
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Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
"When the northern hemisphere is tilted towards the Sun, it receives more direct sunlight and for a longer portion of the day, so the temperature increases. Similarly in winter, the reduction in sunlight hours and more glancing angle to the Sun means the air remains colder.
However, just as with the air in your home, the atmosphere and, more importantly, the oceans take time to heat up. This means that even though the solstice marks the longest or shortest days (and the most direct or indirect sunlight), there is a considerable lag between that and the peak of warm or cold weather. As a result, meteorological (weather-based) summer starts at the beginning of June and ending with the last day of August. Astronomical summer can either begin on the solstice, or, if using length of days as a guide, be centred on the solstice, depending on the situation. "
No idea if that helps or not.😁
In addition, I will continue to use Celsius to prove how cold it is and Fahrenheit to prove how hot it is.