ROBLOX 2009E in Novetus refers to early 2009.

What that means

  • It is not a single exact day or month in the source I found.
  • It’s the client version range labeled “Early 2009,” and the wiki notes it as the last client to use circle studs.

Practical answer

If you’re asking for the date , the closest accurate answer is early 2009 , not a specific release date.