Calendar types in watches

Being used to the world of software, where only ignorant and amateurish systems don't handle the 400-year rule in the Gregorian calendar, it's eye-opening to find out that people are paying thousands of dollars for a time-keeping device that needs the date to be manually fixed five times a year.

Patek Phillippe has a complication not mentioned on this list that is one of the most complex complication ever built: the Calibre 89 [1] that can keep track of when Easter is (to a point).<p>Another contender is the Vacheron Constantin 57260 [2].<p>Here [3] is a good demonstration of how a perpetual calendar works.<p>[1]: <a href="https:&#x2F;&#x2F;hausmann-co.com&#x2F;en&#x2F;the-patek-philippe-calibre-89-the-first-watch-to-indicate-the-date-of-easter&#x2F;" rel="nofollow">https:&#x2F;&#x2F;hausmann-co.com&#x2F;en&#x2F;the-patek-philippe-calibre-89-the...</a><p>[2]: <a href="https:&#x2F;&#x2F;www.prestigetime.com&#x2F;blog&#x2F;worlds-most-complicated-watch.html" rel="nofollow">https:&#x2F;&#x2F;www.prestigetime.com&#x2F;blog&#x2F;worlds-most-complicated-wa...</a><p>[3]: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=YERho3Q4Abo" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=YERho3Q4Abo</a>

Personally I find it more handy to know <i>day</i> (of week) than <i>date</i> (of month), but I don&#x27;t think I&#x27;ve every seen a watch that does day-only, usually either date-only or day-date.

An excellent visual+interactive deep-dive into the internals of a basic mechanical watch - inc. complication for a simple date:<p><a href="https:&#x2F;&#x2F;ciechanow.ski&#x2F;mechanical-watch&#x2F;" rel="nofollow">https:&#x2F;&#x2F;ciechanow.ski&#x2F;mechanical-watch&#x2F;</a>

Calendars is a part of why I&#x27;ve been wearing Casio digital watches for a long time.

Perpetual calendar complications are approaching the territory of mechanical computers and thus hold interest to me. It is interesting challenge to think of how to accomplish some other alternative calendars mechanically.

As much as I will most likely never spend 6 figures on a watch, I greatly appreciate their engineering. Tangential, does anyone know how easy is it to design and build your own movement?

Anyone know about any mechanical wall clocks, grandfather clocks, or mantle clocks (? I mean ones that stand on their own) which show the date? It seems that this is a really commonly sought after feature of wrist watches but for some reason hard to find or non existent in mechanical non-wrist clocks.

A very good article, well explained, and I appreciate the photos of fine watches.<p>As shown, date complications are very tough to calculate and there are many levels of features.<p>However, the phases of the moon complication is not discussed in much depth here. Is it a simple calculation independent of the date?

Question for folks who live in non-English speaking countries: do you guys wear watches with calendars in English?<p>Last time I was in a mall in Mexico City, I asked a guy behind the counter of some store if they had any watches that had either the months or days of week in Spanish... surprisingly, the answer was no. English only.

My eyes are so bad now that I would rather have a no date. Strangely the no-date watches tend to be out of my price range.

Hah, the author of the go-vim plugin!