Hello,
I'm looking for a better understanding to the body assy date that GM used on these cowl tags.
I'm about to start the restoration of a '69 X33. The body assy date is 05C.
I understand it's the 3rd week of May but what "EXACTLY" is considered the 3rd week of May is what I'm baffled about. I know a calendar week is considered Sunday-Sunday. May 1st 1969 began on a Thursday, is this really considered the first week even though it's not a full week thus making the 3rd of week May the 11th-18th ?

Thanks for any info guys and gals
DC

 

I would guess its the third week of May. My guess would be the 11th-18th going Sunday to Sunday. Just knowing its the 3rd week is all that usually needed during a 100% correct restoration to know what parts were available and what was used at that time due to slight changes throughout the production.

 

That's like a trick question. Don't look at the calendar then. The first day of every month is the 1st. One week is 7 days. So the first week of the month would be the 1st-7th. Week two would be the 8th-14th, and so on.
With using the "calendar week" to map out a 30 day month for instance, where the 1st is on a Saturday, would mean that month has 6 weeks. And we all know a month is not 6 weeks long.
With your car being built the 3rd week, it would have been between the 15th-21st. Build dates weren't day specific, only week specific.

 

Thank you for the tips. Proper care will save money in long term. Someone always help make seriuosly posts i'd condition.

 

Ummmm yeah, what said he.