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scl6118 · 21 November 2010, 03:11 PM

Hello everybody. I have read several times that you are not supposed to set the time or date on a mechanical watch when the time is between 8pm-1am or whatever. I have also read that this does not apply to GMT IIC's, which I own. I have been setting my time and date at all hours of the day and haven't had a problem, but am kinda concerned. Can anybody tell me definitively if I am causing any kind of damage or putting my watch at risk by doing this? Thanks.

StarSovereign · 21 November 2010, 03:30 PM

What? What's the reasoning? Could it have something to do with the date change? I'm calling BS on this one...

Andad · 21 November 2010, 03:33 PM

IMO with most movements that have a 'slow' date change then yes this is correct as the date change pick up mechanism engages, changes the date and disengages over a few hours.
Movements that have a 'snap' date change are not usually a problem and this includes the modern Rolex movements.
If you have a lot of watches including vintage it pays to adhere to this exclusion zone from habit just to be safe.
Rolex GMT's are not a problem backwards or forwards and this is what they are designed to do.

ParisDakarBmw · 21 November 2010, 03:52 PM

My understanding comes from owning several Breitling chrono's. There is a warning to refrain from adjusting the time between 22:00 hours, and 02:00 hours. I didn't listen and my date started to roll over at 3:30 in the morning.

There is a set of gears that activate during the date change. If you move the time train, it also moves the date wheel however much you change it. Your hands will be off however many hours you changed it.

The correction was to remove the hands, and move the watch to the exact snap of the date. Place the hands back on at midnight high, and it should be back in line with the date.

There are several other Chrono models that have that same style movement. I wonder if the Daytona is like that too?

Andad · 21 November 2010, 03:55 PM

Quote:

Originally Posted by ParisDakarBmw

My understanding comes from owning several Breitling chrono's. There is a warning to refrain from adjusting the time between 22:00 hours, and 02:00 hours. I didn't listen and my date started to roll over at 3:30 in the morning.

There is a set of gears that activate during the date change. If you move the time train, it also moves the date wheel however much you change it. Your hands will be off however many hours you changed it.

The correction was to remove the hands, and move the watch to the exact snap of the date. Place the hands back on at midnight high, and it should be back in line with the date.

There are several other Chrono models that have that same style movement. I wonder if the Daytona is like that too?

My Daytona would be like that if it had a date?

dddrees · 21 November 2010, 06:57 PM

Yeah, I messed my Daytona up so bad it no longer has a date. It dissapeared completely.

I wasn't aware of the date and time thing until after I noticed I was having a problem adjusting my date on my IWC Pilot Chronograph just after I got it. The date wouldn't move until after I adjusted the time. I spoke with my AD after that and he explained that between 8:00 and 1:00 or 2:00 the gears are in motion and you could damage the watch by trying to adjust the date between these times. He said it isalways best to place the watch at 6:30 when attempting to adjust the date.

padi56 · 21 November 2010, 06:59 PM

Quote:

Originally Posted by scl6118

Hello everybody. I have read several times that you are not supposed to set the time or date on a mechanical watch when the time is between 8pm-1am or whatever. I have also read that this does not apply to GMT IIC's, which I own. I have been setting my time and date at all hours of the day and haven't had a problem, but am kinda concerned. Can anybody tell me definitively if I am causing any kind of damage or putting my watch at risk by doing this? Thanks.

That was on the pre quick set days on say the 15XX series movements from the 3 series no problems whatsoever especially on the GMT.

DM101 · 21 November 2010, 07:06 PM

I read somewhere that applies to PATEK CALATRAVA date watches... not ROLEX

dsio · 21 November 2010, 07:12 PM

The Breitlings with that warning are likely ETA 7750s same as my SMP chrono and have that four hour date change, and they all come with those warnings.

BarkMaster · 21 November 2010, 11:02 PM

Danger in setting time/date at certain times? While driving!!!

When I was a kid, we were crossing a time zone and my mom decided that her watch needed to be set even though she was driving at highway speed. She reached her left arm across to her sister in the passenger and proceeded to lose control of the car. We hit gravel on the side of the road and did a 360. Thankfully, nothing really bad happened.

So my answer is it's dangerous to set time/date while driving.

21 November 2010, 03:11 PM	#1
scl6118 "TRF" Member Join Date: Oct 2009 Real Name: Shawn Location: United States Watch: SS GMT IIC Posts: 1,624	Danger in setting time/date at certain times? Hello everybody. I have read several times that you are not supposed to set the time or date on a mechanical watch when the time is between 8pm-1am or whatever. I have also read that this does not apply to GMT IIC's, which I own. I have been setting my time and date at all hours of the day and haven't had a problem, but am kinda concerned. Can anybody tell me definitively if I am causing any kind of damage or putting my watch at risk by doing this? Thanks. __________________ Current: SS GMT IIC Former: Panerai 114 Former: Breitling Hercules :

21 November 2010, 03:30 PM	#2
StarSovereign "TRF" Member Join Date: Apr 2009 Real Name: Erik Location: Bay Area, CA Watch: 116234, 116710LN Posts: 936	What? What's the reasoning? Could it have something to do with the date change? I'm calling BS on this one... __________________ Submariner 116610LN - Black Dial & Stainless Steel DateJust 116234 - White Stick Dial & Roulette Wheel GMT-Master II 116710LN - Black Dial & Green "Fouth Hand"

21 November 2010, 03:33 PM	#3
Andad 2024 SubLV41 Pledge Member Join Date: Nov 2006 Real Name: Eddie Location: Australia Watch: A few. Posts: 37,497	IMO with most movements that have a 'slow' date change then yes this is correct as the date change pick up mechanism engages, changes the date and disengages over a few hours. Movements that have a 'snap' date change are not usually a problem and this includes the modern Rolex movements. If you have a lot of watches including vintage it pays to adhere to this exclusion zone from habit just to be safe. Rolex GMT's are not a problem backwards or forwards and this is what they are designed to do. __________________ E

21 November 2010, 07:12 PM	#9
dsio "TRF" Member Join Date: Jun 2010 Real Name: Ashley Location: Brisbane Watch: Rolex Sub 1680 '79 Posts: 2,301	The Breitlings with that warning are likely ETA 7750s same as my SMP chrono and have that four hour date change, and they all come with those warnings. __________________ -- Omega Seamaster Grand-Lux Stepped Pie-Pan 14K Gold OJ2627 '53 -- -- Omega Cal 320 Chronograph 18K Gold OT2872 '58 -- -- Omega Cal 321 Speedmaster Pro 145.012 '67 -- -- Rolex Submariner 1680 "Ghost" '79 -- -- Rolex SS Daytona 116520 '04 --

21 November 2010, 11:02 PM	#10
BarkMaster "TRF" Member Join Date: Jul 2009 Location: Texas Watch: 18078 YG DD Posts: 7,962	Danger in setting time/date at certain times? Danger in setting time/date at certain times? While driving!!! When I was a kid, we were crossing a time zone and my mom decided that her watch needed to be set even though she was driving at highway speed. She reached her left arm across to her sister in the passenger and proceeded to lose control of the car. We hit gravel on the side of the road and did a 360. Thankfully, nothing really bad happened. So my answer is it's dangerous to set time/date while driving. __________________ BARK BARK BARK BARK BARK BARK BARK BARK BARK BARK BARK BARK

21 November 2010, 03:52 PM	#4
ParisDakarBmw Banned Join Date: Dec 2009 Real Name: Paul Location: New Haven, CT Watch: 116610 Sub-C Posts: 6,552	My understanding comes from owning several Breitling chrono's. There is a warning to refrain from adjusting the time between 22:00 hours, and 02:00 hours. I didn't listen and my date started to roll over at 3:30 in the morning. There is a set of gears that activate during the date change. If you move the time train, it also moves the date wheel however much you change it. Your hands will be off however many hours you changed it. The correction was to remove the hands, and move the watch to the exact snap of the date. Place the hands back on at midnight high, and it should be back in line with the date. There are several other Chrono models that have that same style movement. I wonder if the Daytona is like that too?

21 November 2010, 06:57 PM	#6
dddrees "TRF" Member Join Date: May 2010 Real Name: Dan Location: USA Watch: This N That Posts: 34,253	Yeah, I messed my Daytona up so bad it no longer has a date. It dissapeared completely. I wasn't aware of the date and time thing until after I noticed I was having a problem adjusting my date on my IWC Pilot Chronograph just after I got it. The date wouldn't move until after I adjusted the time. I spoke with my AD after that and he explained that between 8:00 and 1:00 or 2:00 the gears are in motion and you could damage the watch by trying to adjust the date between these times. He said it isalways best to place the watch at 6:30 when attempting to adjust the date.

21 November 2010, 07:06 PM	#8
DM101 "TRF" Member Join Date: May 2008 Location: Singapore Posts: 901	I read somewhere that applies to PATEK CALATRAVA date watches... not ROLEX

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