72 Production when did it start?

[1970challenger]

Hello, so for some reason I had assumed for the last 5 years that my car was built 11/28/71. But out messing around in the garage this evening I took a picture of the door data tag, and it was 8-71. That concerned me as thinking it should be 11-71, turns out I messed up the info from the fender tag. And my car was actually built on 8/28/71 a Saturday.
So my question is this when did they start production of the 72’s, and Saturday production? Were they running 6 days a week back then, or was it a Friday night shift production?

 

[1970challenger]

Hello, so for some reason I had assumed for the last 5 years that my car was built 11/28/71. But out messing around in the garage this evening I took a picture of the door data tag, and it was 8-71. That concerned me as thinking it should be 11-71, turns out I messed up the info from the fender tag. And my car was actually built on 8/28/71 a Saturday.
So my question is this when did they start production of the 72’s, and Saturday production? Were they running 6 days a week back then, or was it a Friday night shift production?

Well I did just find on the internet that on 9/28/71 the 1972 models went on display.. That’s kinda cool, so it was built a month prior.
https://www.allpar.com/d3/history/plymouth/plymouth-1928-2001.html

 

[Chryco Psycho]

Usually the 3rd week of Aug is when production starts for the next year , Sat is unlikely tho

 

[Xcudame]

The only thing I can think of if it was built on a Saturday is that it was early production and the engineers built it as they were writing assembly instructions. This would be supported by a very early sequence number. Do you have more info for us regarding fender tag or build sheet?