The Obamas, Lady Gaga and Beyoncé: New Livestreaming Events

Thomas Adès’s ‘The Exterminating Angel’

Friday at 7:30 p.m. at the Met Opera website

“If you see one opera this year, make it ‘The Exterminating Angel,’” reads the New York Times headline for the review of this 2017 production. If you missed it then, now is your chance. Conducted by Thomas Adès and starring Audrey Luna, Amanda Echalaz, Sally Matthews, Sophie Bevan, the show tackles topics that are as relevant now as they were then. “The opera has discomforting timeliness at a time when many Americans feel trapped in partisan battles over elites, economic justice and borders,” Anthony Tommasini wrote in his review. The event is part of The Met’s free series “Nightly Met Opera Streams.”

When: 7:30 p.m., and will remain available for 23 hours.

Where: The Met Opera website, and on all Met Opera on Demand apps.

‘Dear Class of 2020,’ With the Obamas, Lady Gaga and Beyoncé

Saturday at 3 p.m.

No one’s ever had a commencement ceremony like this. On Saturday, former President Barack Obama, Michelle Obama, Lady Gaga, Beyoncé, Bill and Melinda Gates, Condoleezza Rice, Malala Yousafzai, Taylor Swift, BTS, Megan Thee Stallion and many others are set to take part in YouTube’s “Dear Class of 2020” virtual commencement, a six-hour event celebrating graduates whose in-person ceremonies were canceled because of the pandemic.

When: 3 p.m.

Where: The YouTube Originals YouTube channel.

A Virtual Dive Into the World’s Oceans

Sunday at 7 p.m.

The Explorers Club’s “World Oceans Week” kicks off on Sunday (in conjunction with the United Nations’ World Oceans Day on Monday) with a conversation among leading explorers, scientists and oceanographers including Jean-Michel Cousteau, Sylvia Earle and Bertrand Piccard. After that, tune in for a virtual-reality film event, “Immerse,” which allows viewers to “swim” with manta rays, sea turtles and sharks, and see the threatened coral ecosystems. The following five nights will focus on topics like sharks and technology, and sustainable seafood.

When: Sunday at 7 p.m. through June 12 at 7 p.m.

Where: The Explorers Club website and Facebook page.