It is called silver or silver year.
Because its the 40th anniversary all this week, that's when it came out
Why is the 16th anniversary called tungsten
In the US it's called a cotton anniversary, and in the UK it's called a paper anniversary.
a flower
A 100th year Anniversary is CAlled a Cenntenial .
It is called the "opal" anniversary in the USA.
Tungsten anniversary
A 100th wedding anniversary is called a "diamond" anniversary.
National Boy Scout week is the week of the anniversary of Boy Scouts of America, or the week of February 8th
nothing, because there is no way in hell that you are in love after just one week. How about a ring out of a crackerjack box / gumball machine? I believe one week is the plastic / aluminum anniversary.
A 70th Anniversary is called a Platinum.