5:00pm Eastern Standard Time
It ends at midnight
August 12
at the white house
The wedding will start 11am UK time, but there has been no information on how long the ceremony will last yet.
28th February 2010 is the closing ceremony
A safe bet would be that the award ceremony will end just before 10 p.m. Arizona time.
encouraging
The swearing in ceremony begins at 11:30 AM EST; the parade begins at 2:30 PM EST. The ceremony itself will end when the speeches and music are over -- unknown exactly when that will be but sometime before the parade begins.
A culmination ceremony is an event that marks the end or completion of a significant period of time, such as the completion of a school year, program, or project. It often involves celebrating achievements, recognizing participants, and looking forward to future endeavors.
It is lit at the end of the opening ceremony.
End closing ceremony
It can be at the end of the ceremony.