When was Prelude in D Major written?

I think your choice of categories is somewhat misleading; Bach never wrote a 'Prelude in D major' but Rachmaninoff did, he wrote it in 1903. Try using the opus number, or a similar number that distinguishes works from each other e.g. Sibelius' 'Symphony No. 2 in D major, Op. 43' and Beethoven's 'Symphony No. 2 in D major, Op. 36'.

2nd answer:

In order to know when this prelude was written you'd need to know who composed it. Preludes are short pieces of music, generally for piano, and many different composers have written them, in various keys. "Prelude in D Major" isn't enough information.