What a pity! I overslept and I missed the opening a half of the Olympic opening ceremony! I swathed ("Swathed" means wrapped in layers of fabric and I'm not sure what word you wanted here.) on the TV when athletes were marching on the stadium. The difference between London and my city is 10 hours. (Time difference? If so, you should say "the time difference.")
After the Ceremony ended, I tried to find a video on internet, but there were not none. Some day I will see the Ceremony, but I won't feel the union unity and happiness with all there the rest of the world.

____

You're English is pretty good. Sorry you missed the Olympics! I didn't see them either, but I'm not too interested in them.

I missed the half of the London Olympic opening ceremony !

What a pity! I overslept and I missed the half of the London Olympic opening ceremony! By the time I turned the TV on all the athletes were marching in the stadium. The time difference between London and my city is 10 hours.
After the Ceremony ended, I have tried to find a video of the opening ceremony on the internet, but I could not find anything. Some day I will see the ceremony, but I won't feel the same unity and happiness with all the rest of the world.