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Spring

• The astronomical spring comes later than the calendar spring, i.e., the summer equinox (March 20 or 21 in the northern hemisphere,
• September 22 or 23 in the southern hemisphere), and the summer equinox (northern) in the northern hemisphere on June 20 or June 21.
• In the Southern Hemisphere on 21 or 22 December).

Summer

• Summer is one of the four seasons.
• Summer is the hottest season between spring and autumn.
• Summer lasts from the longest day in the northern hemisphere to the equinox.
• This season runs from June 22 to September 22 in the Northern Hemisphere and from January 22 to March 21 in the Southern Hemisphere