The 27th wedding anniversary is not considered a milestone year and has no special name attached to it. There isn't a traditional gift associated with this, however, the modern gift is sculpture.
The 27th Wedding Anniversary does not have any traditional materials or Symbols associated with it.A Contemporary or Modern 27th anniversary gift has a theme of Sculpture.
100 anniversary.
.
Octocentennial or octocentenary.
quasquicentenial
The date of Krishna janmasthmi in 1929 is 27th August. it is the birth anniversary of Lord Sree Krishna.
bicentennial
ghosts birthday
centenary
it is an anniversary
Tin/aliminium
silver anniversary