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The Persian calendar begins each year at the northward equinox, observationally determined at Tehran. [15] The Indian national calendar starts the year on the day next to the vernal equinox on 22 March (21 March in leap years) with a 30-day month (31 days in leap years), then has 5 months of 31 days followed by 6 months of 30 days. [15]
The vernal equinox happens every year, yet most people don't know what it is or why it's important. Here's the scientific—and spiritual—scoop on the first day of spring. The post When Is the ...
Vernal equinox and autumnal equinox: these classical names are direct derivatives of Latin (ver = spring, and autumnus = autumn). These are the historically universal and still most widely used terms for the equinoxes, but are potentially confusing because in the southern hemisphere the vernal equinox does not occur in spring and the autumnal ...
At the spring equinox, also called the vernal equinox, days and nights are approximately twelve hours long, with daytime length increasing and nighttime length decreasing as the season progresses until the summer solstice. The spring equinox is in March in the Northern Hemisphere and in September in the Southern Hemisphere, while the summer ...
Seasons change all the time. The changing of the seasons is either a solstice or an equinox. The beginning of spring is known as the vernal equinox. Let's find out how it happens
The Met Office explains the difference between meteorological spring and astronomical spring
The data in red show the polar point in past epochs and the constellation the vernal equinox was in at that time. The plane of the ecliptic is the plane described by the apparent motion of the Sun against the starry background. It is the Earth's orbital motion about the Sun which causes this apparent motion to occur.
Sunday, March 20 marks the arrival of the spring equinox, bringing the first day of spring to the Northern Hemisphere.