Oh, lunar majesty of near-earth circle, why doth your shine incite lack of doubt?
Awake you keep the owl and wombat, all the while a mystery kept, through the blackness truly soaring, just leaving toward the beginning of the day (usually).
Yet over the long run you appear to morph from something trim to a healthy girth. Early man found the mystery and since there was no real way to keep it we charted your path and labeled your phases until we sang our own self praises for securing a piece of the skies with simply our brain, our thoughts, and eyes.
Hmm, waxing poetically about moon phases (see what I did there? The moon waxes and wanes during its phases. Science joke. It doesn’t matter.) has gotten me eager to take an outing through certain “phases” of designing greatness to examine the most accurate moon phase complications in a wristwatch today.
While this might not actually be a conclusive rundown (there really are a lot of watches out there so please leave a comment on the off chance that you think that I missed one), and a piece from yesteryear that we don’t think about might be more accurate – though probably not worn on the wrist – I’m speculating that at least the best four spots are . . . right on target. Okay, truly, I just can’t stop sometimes.
When it comes to moon phases, the time it takes to go from full moon to full moon is 29.5 days.
Well, pretty much.
Its actual synodic time is 29 ½ days, 12 hours, 44 minutes, and 2.9 seconds.
Astronomy geek side-note: the moon has numerous characterized periods for a lunar month, including sidereal, synodic, tropical, anomalistic, and draconic . The two that really matter to a great many people are sidereal and synodic. The sidereal month, which is utilized by astronomers, is the length of time it takes for the moon to get back to the same situation against an average of background stars. What matters for us watch geeks is the synodic interpretation, which is basically the phases as they relate to the relative alignment with the sun and earth. The average for the synodic month is 29.530587981 days. This will be important later (so please remember this number).
The standard accuracy for a wristwatch’s synodic month (moon phase period) is generated by a gear wheel featuring 59 teeth (it advances by one tooth each day), which nets you a little more than over two years of accuracy before the indication is off by one full day.
That’s not very shabby, however in the event that you think of that in an equivalent blunder in rate for timekeeping in a C.O.S.C.- rated watch, this amount of “accuracy” would mean the watch would gain one moment and 34.6 seconds out of every day. We wouldn’t accept that.
So the following stage was for watchmakers to make a framework with a better toothed gear, boasting 135 teeth to be exact. With this new, more exact moon phase mechanism, many higher end watches have had the option to knock that 2.5-year accuracy up to 122.5 years.
Now, that is something genuine. I don’t think about you, yet that is longer than I hope to be alive and to care about the accuracy of the moon phase watch on my wrist.
But, as with anything, accuracy is relative and a few group wanted more . . . much more. So super-accurate moon phase complications were created. Here is an overview of the 8 most accurate moon phase watches available today.
One for each day of the week, and an extra for great measure!
Number 8: H. Moser & Cie Endeavor Moon
The H. Moser & Cie Endevour Moon starts out the super-accurate moon phase complications at a heavy accuracy of 1,027 years of administration prior to waiting be adjusted by one day. The feat was accomplished by calculating a gear train utilizing an average time of 29.53059 days, utilizing three more significant figures than “exact” moon phases and adding almost a whole millennia to the existence of its accuracy.
A mostly secret fact is that free watchmaker Andreas Strehler was engaged with the plan of this particular development, which Elizabeth has expounded on in H. Moser & Cie. Endeavor Perpetual Calendar On The Wrist .
Way to get the category moving, H. Moser & Cie!
For more information, please visit www.h-moser.com/en/assortment/endeavor-perpetual-moon-1348-0100-blue-seethe .
Number 7: A. Lange & Söhne Richard Lange Perpetual Calendar Terraluna
Next on the rundown is the formidable Saxon brand referred to for other amazing creations such as the Zeitwerk Minute Repeater and the Lange Double Split. Lange pushed the envelope with the Terraluna , utilizing a slightly unique calculation for the gear ratios than Moser to achieve an accuracy of 1,058 years.
The moon also completes a circle around a rotating earth noticeable on the back of the watch thanks to a planetary gear framework. Much more shockingly, that wasn’t a pun.
This watch was a victor at the 2014 version of the Grand Prix d’Horlogerie de Genève in the calendar category, the same release during which Walter Lange won the Special Jury Prize. You can learn about it with regards to its presentation by reading Give Me Five! Perpetual Calendars From SIHH 2014 and with regards to the 2014 Grand Prix d’Horlogerie de Genève by reading Reflections On The 2014 Grand Prix d’Horlogerie de Genève .
Number 6: Patek Philippe Sky Moon Tourbillon
At number six we meet a remarkable person in the Patek Philippe Sky Moon Tourbillon . Truly, this watch is epic by any definition (counting cost). However, what is more epic is that the celestial display on the back was created by calculating 25 trillion (25,000,000,000,000) gear train ratio variations searching for the most ideal combination for all of the indications involved.
The final ratios chosen brought about a moon phase that loses 6.51 seconds each synodic month. In more relative terms, that means the moon phase will be one day behind each 1,073.06 years (if my math is correct).
You can read more about the freshest form of the Sky Moon Tourbillon in The Patek Philippe Sky Moon Tourbillon Earns A Place In Horological History .
Number 5: De Bethune DB28 Digitale
Entering the main five, we come to one of my favorite brands and certainly a favorite watch of mine: the De Bethune DB28 Digitale . This watch makes my heart dissolve with desire, and it would make my wallet liquefy, as well. Yet, regardless of all that, it takes its work as an accuracy instrument seriously.
The minuscule half-polished, half-blued spherical moon rotates so accurately that it is also the one that comes nearest to adding an entire 1,000 years in accuracy. This piece might be off by one entire day at regular intervals. Geez.
For more information, please read The Nine Muses And The De Bethune DB28 Digitale .
Number 4: Ochs und Junior Moon Phase
With number four, though, the whole game shifts into overdrive and we enter the super exactness moon phase complication category. The Ochs und Junior Moon Phase does that shift with a minuscule amount of parts, five to be exact. With those five parts, which make up an epicyclic gear train, moon phase accuracy dramatically multiplies that of the De Bethune DB28 Digitale recorded at number 5 in this countdown.
Calculating the synodic month with the ratios on the gear train, Ochs und Junior obtains a time of 29.5306122449 days. This means that to be off by one day it will take in unfathomable 3,478.27 years. Holy moly.
For more information on this watch, please visit www.ochsundjunior.ch/watches/moon-phase .
Number 3: Jaeger-LeCoultre Duomètre Sphérotourbillon Moon
The Ochs und Junior is hot on the heels of the number 3 watch in this posting, which also happens to be one of my absolute favorite Jaeger-LeCoultre timepieces.
The Duomètre Sphérotourbillon Moon is one fantastic watch, and it also has a moon phase boasting accuracy almost 12% longer than the following best. The Duomètre Sphérotourbillon Moon might be one entire day off after a whopping 3,887 years!
For more information, please see Precession Obsession: Jaeger-LeCoultre Duomètre Sphérotourbillon Moon .
Number 2: Christiaan Van der Klaauw Real Moon Joure
You know how I just said we entered the category of super exactness moon phase watches? Yeah, well presently we’ve left that and entered the ultra-accuracy category. And I mean it. Since quite a while ago known as the lord of astronomical watches, Christiaan Van der Klaauw showed no mercy when planning the mechanism for the Real Moon Joure .
With a ultra-realistic, three-dimensionally shaped moon, this watch might be off by one day after . . . are you ready for this? . . . 11,000 years!
As Popeye the Sailor Man once said, “Ahhg-ug-ug-ug!”
For more information, please visit www.klaauw.com/eng/cvdk-real-moon-joure .
Number 1B: Andreas Strehler Sauterelle à Lune Perpétuelle
Wait a moment, number 1 . . . B? Please hold on to your pants briefly. Andreas Strehler released the Sauterelle à Lune Perpétuelle at Baselworld 2014 and in doing so created the watch with the most accurate moon phase ever. And he utilized just four extra components. Yikes!
It was a genuine feat inferable from the fact that the moon phase is as a rule constantly determined. The moon phase uses internal and external gear teeth. And Strehler utilized indivisible numbers for the teeth, creating extremely complex fractions and an accuracy verging on insanity.
It will take 14,189.5383 years for the moon phase to be off by only one day.
And now I present . . .
Number 1A: AKA “The Most Accurate Moonphase Ever In A Wristwatch”
Drum roll please!
The Andreas Strehler Sauterelle à Lune Perpétuelle 2M!
Just wait, the story improves. As Strehler introduced his watch at Baselworld 2014, he also referenced how he had composed a computer program to calculate the gear teeth ratios to achieve the best accuracy he could.
As a side note, he referenced that he actually had another ratio that was far more accurate than the one in the Sauterelle à Lune Perpétuelle, however it appeared to be almost crazy and pointless excess to place it into a watch.
Two or three months later he did just that.
Utilizing the same number of parts and basically changing the ratios and number of teeth, Strehler was able to shatter the past record and move into his own category: fundamentally perfect.
This new form of the watch has a moon phase multiple times more accurate than its own archetype. The Sauterelle à Lune Perpétuelle 2M will be off by one single day after, get this, 2,060,757 years.
That’s not a mistake: 2.06 million years!
This is such a long amount of time that the moon phase can be viewed as awesome, because when you would have to adjust it by one day, the rotational time of the earth, and the moon, and the relative circles of both will have changed by such an extent that, because the moon is gradually moving away from the earth, our days will be about 36 seconds longer than they are currently and each calculation will be invalid and void for various reasons.
So, basically, this is an ideal moon phase watch. It can’t be made any more ideal for the straightforward reason that the numbers associated with calculating it will change in less time than it requires adjusting the moon phase by a solitary day to be in a state of harmony again.
*Andreas Strehler drops the mic and walks away*
To read more about this watch, please see Blood Moons, Lunar Tetrads, And The Andreas Strehler Sauterelle A Lune Perpétuelle and Andreas Strehler Entered Into ‘Guinness Book Of World Records.’
If moon phases interest you — and the chances are that in the event that you have made it this far, they do — you will probably cherish the moon phase app created by Finnish autonomous watchmaker Stepan Sarpaneva, which is available free on the app store on iTunes at itunes.apple.com/us/app/sarpaneva-moon.