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2h ago

Southern Spring Begins Monday at September Equinox, Agencies Set Exact Times

Officials tie the seasonal start to the Sun crossing the equator, emphasizing that the date shifts rather than following fixed celebrations.

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Día de la Primavera
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Overview

  • Argentina’s Servicio de Hidrografía Naval reports the equinox on 22 September at 15:19 Hora Oficial Argentina (18:19 UTC), which defines the start of spring in the country.
  • Peru’s Senamhi sets spring’s start for Monday at 13:19 local time and forecasts sunnier, warmer conditions in Lima from 22–26 September, with highs near 25 °C inland and morning fog near the coast.
  • Authorities explain the variable date arises from the mismatch between the tropical year (365.2422 days) and the Gregorian calendar (365.2425 days), causing the equinox to fall between 20 and 23 September.
  • Popular observances remain on fixed dates — 21 September in Argentina and 23 September in Peru — even when the astronomical start occurs on a different day.
  • Europe will switch to winter time the night of 25–26 October 2025, with Spain and other EU countries setting clocks back one hour at 03:00 to 02:00.