When does spring begin in Uruguay this year? Date and time of the equinox

Uruguay will officially welcome astronomical spring on Tuesday, September 22, at 9:05 PM, coinciding with the vernal equinox. This astronomical definition marks the beginning of spring in the Southern Hemisphere, contrasting with the Northern Hemisphere's equinox in March.

However, the meteorological definition of spring's arrival can differ. Some countries, including potentially Uruguay, may determine the season's start based on average temperature shifts rather than a fixed calendar date. This approach acknowledges that seasonal changes are not always precisely aligned with astronomical events.

The transition into spring brings a noticeable increase in daylight hours across most regions, except near the tropics where daily duration remains relatively stable. The most significant lengthening of days occurs around the equinox, gradually slowing as summer solstice approaches. For students and families in Uruguay, the arrival of spring also signals the countdown to the September school holidays, scheduled from September 21 to 25 for various educational levels.