Eddie1
130
2100 AD is not a leap year
A good day to all and hope everyone is keeping well.
With 83 years more to 2100 AD, I guess it is conceivable that someone inheriting or purchasing a perpetual calendar watch within the next decade or two will live to see the year 2100 AD, whereby it will not be a leap year. Having experienced the UN GMT Perpetual, it would appear that this is not an issue for the adjustment of the GMT Perpetual to correct for the non-leap year at the turn of the century. I am not sure if this matter has been discussed in this forum before, but I did do a search and did not manage to find anything related to it.
Apart from the UN GMT Perpetual, would all other perpetual calendar watches need to be sent back to their watchmaker for an adjustment to cater for the year 2100 AD? Just a curious musing as to what it could be like then - I guess the watchmakers could start adjusting the watches once 29 Feb 2096 passes.
2100 AD is probably a bit too distant in the future for most of us here today, but just wondering about the perpetual calendar watches that are already in circulation, and also those that are about to be sold, and what the economics of that would be like as we draw closer and closer to 2100 AD.
2100 AD is not a leap year
A good day to all and hope everyone is keeping well. With 83 years more to 2100 AD, I guess it is conceivable that someone inheriting or purchasing a perpetual calendar watch within the next decade or two will live to see the year 2100 AD, whereby it will...
As to my knowledge, the UN still needs adjustment
All commercially produced perpetual calendars (with at least one exception) are designed for a four year leapyear cycle, including the UN. The UN however, simply displays the actual year on the big counter at the bottom of the dial. I assume that there ma...
"Divisible by 4" may need a little modification as 2100, 2200 & 2300 are all divisible by 4
Thanks for the info, Skye, but I think the "divisible by 4" rule may need a bit more definition around it!
I guess to word it clearer,
A leap year falls on years that are divisible by 4, with exceptions for years that are divisible by 100 but not divisible by 400 Regards, skyeriding
Skype is right about the Andersen secular perpetual. It is one of the watches that will keep me going because I must be sure that it knows the 100 year exception and the four hundred year correction.
I am not sure if there is another watch that has that feature. As far as the UN perpetual. That watch will not have to go back to UN in 2100 because it can be corrected with the crown. It is very easy to set no matter when. Certainly another one of those ...
UN perpetuals can be corrected via the crown
Because the quickset function that advances days/months/years doesn't move the day of the week. So all one needs to do come March 2100 ois to advance one day forward using the quickset function. Similarly, all perpetual calendar mechanisms that do not dis...
Thanks to all for the insights and info re perpetuals...
...I was not aware of perpetuals that account for the 400-year period. Will look into that more when I have some time. I just wonder for those that do need to go back to the watchmakers, what happens if the watchmaker is no longer around? Anyway, that is ...
Maybe SOT, but howmsny other secular perpetual calendar watches are there?
Highly likely I will not be alive in 2100.
