In the US there are 10. See Title 5 US Code 6103(a). These ten are observed annually.
Inauguration Day is also a federal holiday, but it only occurs every 4 years when a new president is Inaugurated. This federal holiday only applies to Washington DC and local counties
They observe all US Federal Holidays and have an additional 17 local Official Holidays.
All US Federal Holidays plus 17 Official local holidays.
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This year, (2009) there are 10 federal holidays. A list of them, with their dates can be found at this address. http://www.opm.gov/operating_status_schedules/fedhol/2009.asp
There are a total of 24 official and commemorative holidays in Russia. A few of the holidays are Christmas, Spring Day, and Victory Day.
They celebrate all Federal Holidays and have 17 Official local holidays plus they take an extra week off for Carnival.
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Technically, yes, but some will say that holidays like Easter, which is a religious holiday, or April Fools Day which is a popular holiday are indeed national holidays because so many in the nation see them as holidays, even though they are not federal holidays.
Congress must designate the holiday.
250 working days. There will be 8 official holidays.
In regards to federal holidays - and some provincial holidays in Quebec - There are approximately 252 work days in 2009.