quadranscentennial
quadranscentennially
bicentennial
bicentenary
golden
silver jubilee
centenary
centennial
silver anniversary
bimillennium
bimillenary
semicentenary
semicentennial
yeartide
tricentennial
triennial
tercentennial
decennial
tercentenary
monthsary
sesquicentennial
silver
jubilee
bimillennial
quadringentenary
birthday
ruby anniversary
semiquincentennial
diamond
decaversary
quatercentenary
quatercentennial
diamond jubilee
quinquagenary
trimillennial
birthnight
silver wedding anniversary
wedding anniversary
wooden anniversary
golden anniversary
thirties
vigentennial
sexcentenary
centennially
silver wedding
diamond anniversary
vicennium
quasquicentennial
quadricentennial
ruby wedding