Tomorrow will be the longest day of the year, marking the Summer Solstice when the sun will be exactly vertical to the Tropic of Cancer in the northern hemisphere, Qatar Calendar House (QCH) has said.
It is an important phenomenon as it is an indicator of climatic changes and helps validate astronomical calculations, according to a statement by QCH director Dr Mohamed al-Ansari and noted astronomer Dr Beshir Marzouk.
The summer solstice occurs during the hemisphere’s summer. Depending on the shift of the calendar, the summer solstice occurs sometime between June 20 and 22 in the northern hemisphere and between December 20 and 23 each year in the southern hemisphere, according to information available online. The same dates in the opposite hemisphere are referred to as the winter solstice.
The QCH statement explains that tomorrow will be the longest day of the year in the northern hemisphere and also mark the first day of the “astronomical summer”. On the other hand, it will be the shortest day in the southern hemisphere and marks the first day of the “astronomical winter”.
The Summer Solstice comes after the Vernal (Spring) Equinox, which fell on March 20. The duration of the spring season was 93 days this year, while the summer season will also last for 93 days until the Autumn Equinox on August 22, QCH adds.

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QNE

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