Basically going down that rabbit hole again— we had a discussion a while back BUT it center more on other types of calendars --such as Jewish etc-- you can check that out here:
Found a really nice web site that explains abt dual dates in England and Colonial America–
1752 Calendar Change - Colonial Records & Topics - LibGuides Home at Connecticut State Library..
website says The changeover involved a series of steps:
December 31, 1750 was followed by January 1, 1750 (under the “Old Style” calendar, December was the 10th month and January the 11th)
March 24, 1750 was followed by March 25, 1751 (March 25 was the first day of the “Old Style” year)
December 31, 1751 was followed by January 1, 1752 (the switch from March 25 to January 1 as the first day of the year)
September 2, 1752 was followed by September 14, 1752 (drop of 11 days to conform to the Gregorian calendar)
Then this wiki page
half way down, this wiki document tells you whent some of the different countries/ religions adopted the new calendar and when they adopted Jan 1 as the start of a New Year…
To me that is the important thing you need to know BUT it also says that even though some countries such as Britain excluding Scotland didn’t start using Jan 1 as the start of the New Year until 1752 , they MIGHT have recorded dual dates BECAUSE other European countries were using them prior to that ( Scotland started in 1600)…
Lots to consider BUT basically do it however it works best for you…