This is a recurring frustration for me: whenever I try to look up the exact date when a song/CD/album was released (whether in stores or started being played on public radio stations), they only ever tell me the year! Back in the 1990s, every damn month was like its own "era" to me, so knowing that it was released in "1996" is pretty much useless to me. But that's all the Wikipedia article (and all other sources I can find) says.
Can you tell me the exact date, per-country/region? How do I generally look this up? Why do they only state the year for this? For video games and movies, for example, they almost always have an exact date for each region/country. Why not for CDs/radio releases?