American actress, model, singer and activist Paris Jackson attends Comic-Con in San Diego, California, USA on July 21, 2018. (Photo by @parisjackson/Instagram)

Record snowfall in the Sahara Desert near the town of Ain Sefra in Algeria on January 21, 2017. (Photo by Geoff Robinson/Rex Features/Shutterstock)

Model Joanna Krupa seen out and about leaving Craigs restaurant on April 21, 2017 in Los Angeles, California. (Photo by Splash News and Pictures)

Huge pack of starlings in the sky of the Negev, Israel, on January 21, 2013. Birds are turned in evening twilight before settling to sleep. (Photo by Eliyahu Hershkovitz)

A person dressed as a zombie walks during the annual Zombie Walk in Mexico City, Mexico on October 21, 2023. (Photo by Quetzalli Nicte-Ha/Reuters)

Starlings gather on power lines at dusk, Friday, October 21, 2022, in Overland Park, Kan. (Photo by Charlie Riedel/AP Photo)

A girl competes in a hobby horsing competition in St. Petersburg, Russia, April 21, 2024. (Photo by Dmitri Lovetsky/AP Photo)

A woman reacts with Samoyed puppies as she performs yoga on International Yoga Day, in Bangkok, Thailand, on June 21, 2025. (Photo by Chalinee Thirasupa/Reuters)