In the heart of Prague, the O2 Arena became the epicenter of mixed martial arts excitement as OKTAGON 51 unfolded on Friday, December 29, 2023. ð´WATCHð¥OKTAGON 51 ð´WATCHð¥OKTAGO Home. Interest Group Post Details Page Logging in only takes a few seconds. This will unlock check-in rewards and game tools all at once! UN Web TV is available 24 hours a day with selected LIVE programming of United Nations meetings and events as well as with pre-recorded video features and documentaries on various global issues.