semicentennial
quinquagenary
semicentenary
golden anniversary
quinquennial
sexcentenary
golden wedding anniversary
semiquincentennial
diamond anniversary
bicentenary
diamond jubilee
quatercentenary
tercentennial
bicentennial
quincentennial
semicentury
half-century
golden
centennial
triennial
quadranscentennial
bimillenary
golden wedding
diamond wedding
ice cream changes
jubilee
centenary
diamond wedding anniversary
septcentenary
50s
bimillennial
fifty-oneth
sesquicentennial
silver anniversary
silver jubilee
decaversary
diamond
ruby anniversary
centennially
silver wedding anniversary
fifties
septicentennial
quincentenary
tercentenary
octocentenary
sapphire
quadringentenary
quadricentennial
golden jubilee
bimillennium