55th wedding celebration is Emerald
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An 150 year celebration is called a Sesquicentennial celebration
It is called a "centennial celebration"
A 100 year celebration is called a centennial celebration.
60 year celebration
An 150 year celebration is called a Sesquicentennial celebration
Centennial
It is called Centenary.
An Emerald anniversary
Diamond Jubilee
Diamond Jubilee
It is a century or a centennial
cotton