China (not the country) is the traditional 20 year anniversary or celebration symbol.
There is no specific name.
New Years got it's name from practicality. Since January 1st is the first day of the year, it is commonly called 'New Years' and celebrations are held annually to commemorate it.
Twenty of anything is called a 'score'
Twenty is a score so twenty years is a score of years.
four-score years - is 80. A score is another name for twenty.
His name was Harold Von Vroom.
It has no universally-accepted name.
Twenty Years After was created in 1845.
1 Billion Years Its original name was the Millennium Dome and it was built for the year 2000 celebrations.
Joseph was either in prison for twenty years or in Egypt for twenty years. But I think it was Joseph in Egypt for twenty years.
No.
Musketeers Twenty Years After was created in 1992.