Summer Olympics 2024 Opening Ceremony Time. In los angeles, where the 2028 games will be held, the ceremony will begin at 10.30 a.m., in rio de janeiro at 2.30 p.m., in london at 6.30 p.m. This year’s games kicked off.

And in athens at 8.30 p.m. The ceremony starts at 1:30 p.m.