Chronopin: upcoming release dates, events and other important dates

On 20 September 2026 Polymarket's ladder on a ceasefire that takes effect and holds for ten straight days gave December 31, 2026 a 15% chance, and October 31 only 5%. Ukraine signing any written peace instrument with Russia before 2027 was at 11%, and Kalshi put a first in-person Putin-Zelenskyy meeting before 2027 at 7%.

The State Water Resources Control Board approved the final water right permit for Sites Reservoir, a proposed 1.5 million acre-foot offstream reservoir in Glenn and Colusa counties. The Sites Project Authority schedules construction to begin in 2026 and the reservoir to be operational at the end of 2033.

Kalshi settles its year-end ranking market on which lab holds the top AI model on December 31, 2026 — the exchange’s biggest AI book at 11.5M contracts. On 20 September 2026 Claude led at 71.5%, ahead of ChatGPT at 13.6%, Gemini at 8.9% and Grok at 4.1%.

A free midnight fireworks show over the lakefront skyline.

Kalshi’s year-high ladder for Ethereum settles on the highest price ETH touches in 2026. On 20 September 2026, with ether near $2,600, traders gave $3,500 a 30% chance, $4,000 22% and $5,000 9%. Polymarket’s equivalent book was a little more optimistic, pricing a touch of $3,000 at 59.5%.

Finland's Posiva began drilling the first deposition hole at the Onkalo repository, a step toward becoming the world's first facility to permanently bury spent nuclear fuel.

Boston’s free First Night celebration welcomes 2027 on December 31, 2026, with Copley Square as its announced hub. The new edition’s performer schedule is still pending.

A College Football Playoff-era New Year's bowl game at State Farm Stadium, with a parade and fan events beforehand.

Nestlé stops making hollow chocolate figures at its 220-worker Diósgyőr plant in Miskolc at the end of 2026, and Hungarian food wholesaler Vimpex takes the factory over from 1 January 2027, keeping at least a third of the staff.

The winner of the 3 November election takes office on 1 January 2027, the day the state constitution starts the political year, for a four-year term. Governor Kathy Hochul is seeking re-election against Bruce Blakeman.

Antonio Guterres's second term ends on December 31, 2026 and his successor's five-year term begins on January 1, 2027. On 20 September 2026 Kalshi's market on who is confirmed had Rebeca Grynspan at 37%, Carolyn Rodrigues-Birkett at 18% and Olara Otunnu at 10%.

Floral floats, marching bands and equestrian units follow the 5.5-mile route through Pasadena on New Year's Day under the 2027 theme, Welcome.

The Rose Bowl in Pasadena stages one of the four CFP quarterfinals on New Year's Day, with a top-four seed facing a first-round winner.

President Trump has said US tariffs on cars, trucks, auto parts and steel from Canada will rise to 50% on 1 January 2027, doubling the 25% now charged on Canadian autos, after trade talks collapsed in August.

The Prudential Regulation Authority's Basel 3.1 final rules take effect in the UK on 1 January 2027, a year later than first planned, with the market-risk internal model approach following on 1 January 2028.

China's mandatory standard GB 48001-2026 requires a mechanical release on every side door from 1 January 2027, effectively ending flush electronic-only door handles on cars sold there.