Overview
- The instant falls on Dec. 21 at 16:03 in peninsular Spain and at 15:03 in Argentina, according to national observatories.
- Mexican coverage shows conflicting Central Time conversions—09:03 from INAOE reports versus 03:03 from UNAM’s Institute of Astronomy—underscoring a reporting discrepancy.
- Winter/summer runs about 88 days and 23 hours, ending March 20, 2026 with the next equinox.
- Key sky events include the Ursids around Dec. 22, the Quadrantids peaking near Jan. 3, Earth’s perihelion on Jan. 3, an annular solar eclipse on Feb. 17 (annularity over Antarctic regions) and a total lunar eclipse on March 3 (visible from the Americas, East Asia and Oceania).
- Southern health authorities such as Jujuy’s Ministry of Health advise heat precautions—hydration, shade and avoiding midday sun—as the summer season begins.