Holidays for banks are decided by the body of rules and regulations which set the calendared holidays for year. The banks holidays are not revised again and again. They depend upon the month they are been made.

Banks are the nonprofit organizations which work on the bases of welfare of the society.Bank holidays are the requirements of every profit or nonprofit organization. Time to sum up about the best nonprofit organization that is banks. Generally there is only one holiday addressed to the banks that is on Sunday but the Saturdays is also half holiday as the banks open till half noon as per the schedules.
These holidays of bank are very important as the bank have to conclude the work done in months and years. Some time these banks holidays are in the form of strike and these banks utilize the strike days in completing their pending tasks. It is said that these bank are often shut down on the days as they have to complete their pending works and maintain the pending records. The days on which the banks are declared to shut down are like 1. Christmas day, 2. Good Friday and 3. Easter Sunday. According to the system of Banking and Financial Dealings Act 1971, the holidays are decided in such a way that the public holidays should not suffer due to it.
The bank holidays in India are decided by the RBI that is reserve bank of India. RBI set the rules and regulations which are followed by banks all over India and the memorandum was sent to the branches for the same.
The Bank holidays calendar and the bank holidays in 2012 are listed below:
New Year's Day, Martin Luther King Day, Presidents, Memorial Day Mon, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving Day Thu, Christmas Day.Bank holidays in India is announced by RBI (reserve bank of India). The Bank holidays are listed in the name of generally public holidays as the time when the banks do not have public operations that is the public dealing. 
In India banks holidays are subjected by the main governing branch of bank holidays and then by the negotiable instruments act of the banks. The Bank holidays are not only scheduled in a year but also categorized on the bases of months. These act are the one that provide holidays to all the 7 territories and 28 states.
banks holidays in usa are different working status and curriculum than in India. In the banks of USA the day of Monday through Friday is known as the “Business day”. The US banks work on the schedule based by the US govt. and the holidays are quite different from the Indian holiday list.
This day of Monday is generally treated as the bank holiday and is also assumed as weekends long events on the day. Rest of the days in India which has holidays same works with the USA. There are hardly ten United States national holidays each year so the banks work according them and can also come up with the pending records and public reports. The US banks are the one that are enclosed and most well defined functional unit for US.