Britain did not convert to the Gregorian calendar until 1751, when 11 days had to be added to their dates to get the Gregorian dates. In 1639 they were 10 days behind the Gregorian calendar.
Re: Klein Tools Or Greenlee. Both Klein and Greenlee are TOP quality tools with a niche market. They have a few common tools (such as rabis and ratchet cutters) and either is worth buying over pretty much anything else. They are not really direct competitors. I prefer Knipex for most hand tools except linemans.
Same here, not a fan of the hand tools, but the specialty tools seem to be pretty good(glow sticks, k.o. sets, etc....) I think the reference to $300 is a good benchmark for Greenlee tools. If a Greenlee tool costs $300 or more, it's worth the money. Anything less than $300 is money better spent elsewhere.