A 30 year celebration is typically referred to as a "pearl anniversary." This term originates from the traditional anniversary gift guide, where pearls symbolize the beauty and longevity of a relationship that has lasted for three decades. Couples often celebrate this milestone with gifts or events that incorporate pearls as a symbol of their enduring love and commitment.
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
55th wedding celebration is Emerald.
Centennial
It is called Centenary.
An Emerald anniversary
Diamond Jubilee
Diamond Jubilee
It is a century or a centennial