Absolutely not, you can never say “has been abolished in 1966” in standard American English (and I’m 99% sure the same is true of standard British English). The

Absolutely not, you can never say “has been abolished in 1966” in standard American English (and I’m 99% sure the same is true of standard British English). The sibling poster is correct that you can say “has been abolished since 1966”, though.