Astronomically, spring lasts for approximately 92.8 days in the Northern Hemisphere, starting with the vernal equinox around March 20 and concluding with the summer solstice around June 21. Meteorologically, spring is defined as lasting exactly three full months—March, April, and May—comprising 92 days (or 93 days during leap years) to facilitate clean, consistent climate record-keeping and seasonal data analysis.
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