The last day of the Gregorian year — celebrated worldwide with countdowns and fireworks.
New Year's Eve, December 31, is observed worldwide with parties, countdowns to midnight, and fireworks. The Times Square ball drop in New York and the fireworks at Sydney Harbour are among the most-watched annual events globally.
Computed for San Cosme y Damian (America/Asuncion) using local sunrise, sunset and astronomical positions.
Other observances and vrats falling in December 2026, with dates computed for San Cosme y Damian.
See every observance, vrat and ekadashi computed precisely for San Cosme y Damian — or pick a different city.
A more detailed account of New Year's Eve in San Cosme y Damian — its mythology, regional variations, and rituals — is being prepared.