It’s not quite a true Houston sports equinox but Thursday will bring something the city’s pro sports fans have not seen in nearly 40 years.

Thanks to the COVID-19 pandemic delaying the NBA season by four months, the city’s MLB, NFL and NBA teams all will play regular-season or playoff games on the same day Thursday for what is believed to be the first time since Oct. 12, 1980.

On that date, the Astros suffered one of the most heartbreaking losses in franchise history, losing the decisive Game 5 of the National League Championship Series to the Phillies 8-7 in 10 innings at the Astrodome after taking a 5-2 lead into the eighth inning with Nolan Ryan on the mound. The Astros will play at Oakland on Thursday afternoon in a game with considerably less stakes.

Also on that October 1980 day, the Oilers lost at Kansas City (where the Texans play Thursday night) and the visiting Rockets lost to the Lakers (who lead the Rockets 2-1 in their second-round playoff series entering Thursday’s Game 4 in Lake Buena Vista, Fla.)

The 1980-81 Rockets got payback later that season, upsetting the defending champion Lakers in the first round en route to making their first NBA Finals appearance. Houston’s NFL teams are still waiting to get payback on Kansas City, which won playoff games between the cities in 1993, 2015 and 2019.

Per Yahoo Sports, a sports equinox, when the four major sports leagues — MLB, NFL, NBA and NHL — play on the same day, has only happened 19 times before 2020.

A bigger rarity is the single-city equinox. It happened for Phoenix on Nov. 4, 2001: when the NFL’s Cardinals, NBA’s Suns and NHL’s Coyotes all lost while the Diamondbacks won Game 7 of the World Series against the Yankees.

On Oct. 28, four Los Angeles teams all played at home, with the Rams. Clippers and Kings winning while the Dodgers lost the clinching Game 5 of the World Series against the Red Sox.