iPad: Just got a brand "new" iPad 4 made week 37 (September)

[SJism23]

I'm disturbed by this. My 4th gen iPad, which I received recently, was made in week 37 (September). This is a long time ago (3 months!). Should I be concerned by this? I've seen other people post their iPad 4 info when they bought it in November and it was made sometime in October.

All info (minus serial number):
1212...
Model introduced: 2012
Request: If your iPad is made in Brazil then please let us know.
Production year: 2012
Production week: 37 (September)
Group1: iPad
Group2: WiFi
Generation: 4
Screen size: 9.7 inch
Screen resolution: 2048x1536 pixels
Colour: Black
Capacity: 32GB
Factory: DM (China - Foxconn)