Born Date

How can I find out what day my car was born on ? Door sticker has 10 - 71 and the build sheet tells me the time of day 22:12, but I can't find the day.
Look on your fender tag, my 70' has the estimated build date on the last line near the right. It might be on the second line up. It will be a three digit code. 110 will be Jan 10th.so 1 thru 9 is Jan to Sept. A is oct, B is November,etc. the next two numbers are the date of the month. That date is approximate, It could have been a few days later. That's all we get.