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txjeep06 · 9 April 2007, 03:35 AM

Greetings All and Happy Easter!!,

I read somewhere that Swiss movements are easily ruined if you change the date while the watch is in between 9pm and 3am when you turn the knob!!! Is this true, I did send my watch, a SS Datejust to the repair shop 3 years ago after 15 years of use. I am wondering if that is what did it???

Txjeep06

Ironstark · 9 April 2007, 03:46 AM

If your watch has a rapid date correction function then it is possible to do some damage to the calender mechanism.
The problem occurs because the rapid date corrector moves the date disc independantly of the calander mechanism.
This is only a problem if the calender mechanism has begun to engage before changeover, or has not fully disengaged after changeover ( when the time shown is between 10p.m. and 6a.m. )It is possible for the date disc and calender wheel to jam and teeth to become damaged either on the disc or the calender wheel.
While this can cause the watch to stop and may even mean a movement service is necessary it will not "ruin" the watch.
If when rapid date change is attempted any heavy resistance is felt, DON`T force it

Rockrolex · 9 April 2007, 11:37 AM

Hello, Tex, and welcome to TRF.

You are correct that with most movements you should not change the date between about 8:00 PM and 4:00 AM to be on the safe side. However there are exceptions to that rule. One exception is the GMT-II. You can change the date backward or forward at any time because the mechanism is different from the other date movements.

Flyjet601 · 9 April 2007, 12:01 PM

Is there anything official from Rolex with regards to this not changing of the date between X and Y.....
I would think that if there was any potential problem, they would advise you not to do it.

I have never read anything from them, except forum chatter.

JJ Irani · 9 April 2007, 12:02 PM

Welcome to TRF, Tex.

General rule of thumb is NEVER to fiddle with the watch between the hours of 8 pm and 2 am.

Cheers - JJ

Flyjet601 · 9 April 2007, 12:06 PM

Quote:

Originally Posted by JJ Irani

Welcome to TRF, Tex.

General rule of thumb is NEVER to fiddle with the watch between the hours of 8 pm and 2 am.

Cheers - JJ

Where does this rule come from???

JJ Irani · 9 April 2007, 12:08 PM

Quote:

Originally Posted by Flyjet601

Where does this rule come from???

JJ

Flyjet601 · 9 April 2007, 12:12 PM

Quote:

Originally Posted by JJ Irani

JJ

thats what I thought

Tombstone · 9 April 2007, 06:14 PM

Tex Welcome its good to have another member, good question by the way.

Incurable · 9 April 2007, 06:44 PM

I know this is a common warning for the Valjoux 7750. I've never read anything regarding Rolex movements and this issue. Perhaps someone can chime in with some documentation regarding this.

padi56 · 9 April 2007, 08:07 PM

Well no real Rolex documentation buts its just a rule of thumb with mechanical movements.But would doubt if in reality it would harm the movement,but at these times the date change gears are at there highest stress.

AdamB · 9 April 2007, 09:19 PM

Quote:

Originally Posted by padi56

at these times the date change gears are at there highest stress.

Sign of the times, I bet years ago they just got on with it

montecristo · 9 April 2007, 09:25 PM

I have heard of the don't change your calender at night thing also but never bothered following it

fat-sam · 9 April 2007, 10:03 PM

Quote:

Originally Posted by Flyjet601

Where does this rule come from???

the thumb

nko51 · 9 April 2007, 10:09 PM

I read somewhere that Swiss movements are easily ruined!

I read nowhere that this is true.

JJ Irani · 10 April 2007, 05:04 AM

Quote:

Originally Posted by fat-sam

the thumb

JJ's thumb?

pcarson · 10 April 2007, 06:43 AM

I think this is a very valuable reference for this topic:-

http://en.wikipedia.org/wiki/Apocrypha

Ironstark · 10 April 2007, 07:34 AM

I spend my days correcting problems like these with Rolex movements.

It is not just a Rolex issue though, any mechanical watch with a calender mechanism and a rapid date change is susceptible to damage if rapid date correction is used when the calender mechanism is engaged. A little common sense is all that is needed and damage can be avoided.

9 April 2007, 03:35 AM	#1
txjeep06 "TRF" Member Join Date: Apr 2007 Location: Texas Posts: 1	Damaging Your Rolex Date Just??? Greetings All and Happy Easter!!, I read somewhere that Swiss movements are easily ruined if you change the date while the watch is in between 9pm and 3am when you turn the knob!!! Is this true, I did send my watch, a SS Datejust to the repair shop 3 years ago after 15 years of use. I am wondering if that is what did it??? Txjeep06

9 April 2007, 11:37 AM	#3
Rockrolex TRF Moderator & 2024 DATE-JUST41 Patron Join Date: May 2005 Real Name: God Location: Washington, D.C. Watch: What do you think? Posts: 37,507	Hello, Tex, and welcome to TRF. You are correct that with most movements you should not change the date between about 8:00 PM and 4:00 AM to be on the safe side. However there are exceptions to that rule. One exception is the GMT-II. You can change the date backward or forward at any time because the mechanism is different from the other date movements. __________________ Despite the high cost of living, it's still very popular. *Tosser Cabinet Member* Official Member: 'Perpetual 30' Vegas International GTG 2016 Official Member "WIS-CON" Las Vegas International GTG 2017 Official Member "WIS-CON" Las Vegas International GTG 2018 Official Member "WIS-CON" Las Vegas International GTG 2019

9 April 2007, 12:02 PM	#5
JJ Irani Fondly Remembered Join Date: May 2005 Real Name: JJ Location: Auckland, NZ Watch: ALL SOLD!! Posts: 74,320	Welcome to TRF, Tex. General rule of thumb is NEVER to fiddle with the watch between the hours of 8 pm and 2 am. Cheers - JJ __________________ Words fail me in expressing my utmost thanks to ALL of you for this wonderful support during my hour of need!! I firmly believe that my time on planet earth is NOT yet up!! I shall fight this to the very end.......and WIN!!

9 April 2007, 06:44 PM	#10
Incurable "TRF" Member Join Date: Jan 2007 Real Name: Pat Location: PNW Watch: your P's and Q's Posts: 2,549	I know this is a common warning for the Valjoux 7750. I've never read anything regarding Rolex movements and this issue. Perhaps someone can chime in with some documentation regarding this. __________________ Rolex GMT Master II 16710 (Blk/Blk) Rolex Explorer 114270 Sinn 356 Sa Flieger Limes Endurance 1Tausend Too many others... #2592 It may seem like I'm doing nothing but, at a cellular level, I'm actually quite busy...

9 April 2007, 08:07 PM	#11
padi56 "TRF" Life Patron Join Date: Jun 2005 Real Name: Peter Location: Llanfairpwllgwyng Watch: ing you. Posts: 52,260	Well no real Rolex documentation buts its just a rule of thumb with mechanical movements.But would doubt if in reality it would harm the movement,but at these times the date change gears are at there highest stress. __________________ ICom Pro3 All posts are my own opinion and my opinion only. "The clock of life is wound but once, and no man has the power to tell just when the hands will stop. Now is the only time you actually own the time, Place no faith in time, for the clock may soon be still for ever." Good Judgement comes from experience,experience comes from Bad Judgement,.Buy quality, cry once; buy cheap, cry again and again. www.mc0yad.club Second in command CEO and left handed watch winder

9 April 2007, 03:46 AM	#2
Ironstark TechXpert Join Date: Mar 2007 Location: Rolex world Watch: SS/W Skydweller Posts: 527	If your watch has a rapid date correction function then it is possible to do some damage to the calender mechanism. The problem occurs because the rapid date corrector moves the date disc independantly of the calander mechanism. This is only a problem if the calender mechanism has begun to engage before changeover, or has not fully disengaged after changeover ( when the time shown is between 10p.m. and 6a.m. )It is possible for the date disc and calender wheel to jam and teeth to become damaged either on the disc or the calender wheel. While this can cause the watch to stop and may even mean a movement service is necessary it will not "ruin" the watch. If when rapid date change is attempted any heavy resistance is felt, DON`T force it

9 April 2007, 12:01 PM	#4
Flyjet601 "TRF" Member Join Date: Sep 2006 Location: Hong Kong Watch: All of them Posts: 2,789	Is there anything official from Rolex with regards to this not changing of the date between X and Y..... I would think that if there was any potential problem, they would advise you not to do it. I have never read anything from them, except forum chatter.

9 April 2007, 06:14 PM	#9
Tombstone "TRF" Member Join Date: Jan 2007 Real Name: Richard Location: LV, NV Watch: LV Sub and others Posts: 2,689	Tex Welcome its good to have another member, good question by the way.

9 April 2007, 09:25 PM	#13
montecristo "TRF" Member Join Date: Nov 2006 Real Name: Ken Location: New York Watch: 116234 DateJust Posts: 1,769	I have heard of the don't change your calender at night thing also but never bothered following it __________________ My Rolex reference books collection: The Rolex Report: An Unauthorized Reference Book For The Rolex Enthusiast Rolex Wristwatches: An Unauthorized History (Schiffer Book for Collectors) (Hardcover) Vintage Rolex Sports Models: A Complete Visual Reference & Unauthorized History (Hardcover)

9 April 2007, 10:09 PM	#15
nko51 "TRF" Member Join Date: Feb 2007 Real Name: Alex Location: USA Watch: TT Blue Sub Posts: 2,542	I read somewhere that Swiss movements are easily ruined! I read nowhere that this is true. __________________

10 April 2007, 06:43 AM	#17
pcarson Member Join Date: Feb 2007 Real Name: Peter Carson Location: Australia Watch: 16610 Sub Date Posts: 265	I think this is a very valuable reference for this topic:- http://en.wikipedia.org/wiki/Apocrypha

10 April 2007, 07:34 AM	#18
Ironstark TechXpert Join Date: Mar 2007 Location: Rolex world Watch: SS/W Skydweller Posts: 527	I spend my days correcting problems like these with Rolex movements. It is not just a Rolex issue though, any mechanical watch with a calender mechanism and a rapid date change is susceptible to damage if rapid date correction is used when the calender mechanism is engaged. A little common sense is all that is needed and damage can be avoided.

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