What year was the Moody Blues song Go Now a hit?

The original single version was released on 13th November 1964 in the UK on the Decca label (catalogue number F 12022), where it reached the top of the charts and sold over 250,000 copies. It was released on 20th February 1965 on the London label in the US (catalogue number 45-9726), where it reached number ten in the Billboard charts. Global sales topped over a million and it looked encouraging for a long and successful chart career.

The Moody Blues Encyclopaedia - Victor Rust (Second Edition)