A tons! Happy New Years, Groundhogs Day, President's Day, Valentine's Day, St. Patrick's Day, Easter, Mother's Day, Father's Day, 4th Of July, Halloween, Thanksgiving, Christmas, Kwanzaa, and Hanukkah.
US holidays?
57 holidays
There are about 45 holidays in the USA
There are many holidays not celebrated in the US. The Queen's Birthday, ANZAC day and Australia Day are just three of many holidays not celebrated or recognised in the US.
I think the USA has a few unnecessary holidays...
Thanksgiving, and Christmas, are both holidays that are nationally recognized in the US.
Monday
You can find information about US holidays and which businesses will be closed on these holidays on the Wikipedia page called "Public Holidays in the United States". The page has a table organizing the data by date order.
There are a number of websites one can use to book US holidays in January. One can do this on sites such as 'Thomas Cook', 'Expedia', 'Falcon Holidays' and 'Travel Republic'.
EasterChristmas
Bangkok holidays are provided by the Bangkok government. If one works for the Embassy of the United States, then the holidays are provided by the US government.
Theodore Roosevelt does NOT have any US holidays named after him, but he is included, with all other US Presidents, in the US "President's Day" holiday in February.