2-counter Speedy for dual time vs GMT

Lu.. · Wed. 2:09pm

So I'm seriously considering getting a Chronoscope and using it when I travel.....

I can use the 3 o'clock subdial for my home time and the caliber 9908 has hour jumping functionality to set the local time.....

I saw all three Chronoscope models at the OB today and the silver variant was amazing.....I would love getting the Pilot reference, but it is just too thick....if they used the manual 9906 movement from the '57...I would be all over it....the '57 references just do nothing for me....

I had a Tudor BB Pro but sold it due to its thickness....just curious if anyone prefers using their two-counter speedy (Pilot , '57, Chronoscope, etc..) to keep track of both time zones vs a 24 hour GMT model....

bgrisso · Wed. 2:48pm

You will not have 24 hour home time, so that might be confusing depending on the particular local/home time zones in question? Unless you are just very familiar with the time zone offset, I can imagine you might have to think for a minute, when you look at the home time, is it AM or PM? And you will have to start the home time zone (chrono) at exactly midnight (no big deal), and you will not have any chrono functionality while you use it for dual time. And it might be kinda hard to read the time on the small subdial (especially with all those scales running through it on the chronoscope model), rather than reading the time on the full dial with a GMT hand. But those issues aside, don't see why it wouldn't work. I haven't tried it myself.
If you already had one of these watches, or wanted to get one anyways for other reasons, and using it this way was saving you buying a second GMT watch, that makes sense. But if you were buying one of these watches specifically as a GMT, instead of a GMT, I'm not sure I would do that myself.

Donn Chambers · Wed. 5:05pm

bgrisso
You will not have 24 hour home time, so that might be confusing depending on the particular local/home time zones in question? Unless you are just very familiar with the time zone offset, I can imagine you might have to think for a minute, when you look at the home time, is it AM or PM? And you will have to start the home time zone (chrono) at exactly midnight (no big deal), and you will not have any chrono functionality while you use it for dual time. And it might be kinda hard to read the time on the small subdial (especially with all those scales running through it on the chronoscope model), rather than reading the time on the full dial with a GMT hand. But those issues aside, don't see why it wouldn't work. I haven't tried it myself.
If you already had one of these watches, or wanted to get one anyways for other reasons, and using it this way was saving you buying a second GMT watch, that makes sense. But if you were buying one of these watches specifically as a GMT, instead of a GMT, I'm not sure I would do that myself.

The other issue (besides not being able to use the watch as a chronograph!) is that if you bump the top pusher, it will stop the counter and mess up your “home time” function.

Larry S · Wed. 5:16pm

Speaking as someone who actually used their GMT Master II on the fly in a global job, if calculating 24 hr time zones is your goal get a real GMT watch. Reverso Duo is also a good option for travel.

bgrisso · Wed. 5:49pm

Donn Chambers
The other issue (besides not being able to use the watch as a chronograph!) is that if you bump the top pusher, it will stop the counter and mess up your “home time” function.

yep, I thought about that. You would probably be pretty annoyed it that happened, and would have to wait until midnight home time to resynch.

ErichKeane · Wed. 6:24pm

Larry S
Speaking as someone who actually used their GMT Master II on the fly in a global job, if calculating 24 hr time zones is your goal get a real GMT watch. Reverso Duo is also a good option for travel.

IMO, the 'traveller' GMT movements are just so darn useful for travelling. I typically 'start' my trip with the GMT hand set to GMT time or home-time (depending... rotating bezel I leave it on GMT time so I can flip between pretty easy).

Then, every time I take off, I jump-hour my way to the landing-time-zone. The key is that when travelling, it isn't just 'tracking' a 2nd time zone, it is quickly being able to flip it.

bgrisso · Wed. 6:26pm

ErichKeane
IMO, the 'traveller' GMT movements are just so darn useful for travelling. I typically 'start' my trip with the GMT hand set to GMT time or home-time (depending... rotating bezel I leave it on GMT time so I can flip between pretty easy).

Then, every time I take off, I jump-hour my way to the landing-time-zone. The key is that when travelling, it isn't just 'tracking' a 2nd time zone, it is quickly being able to flip it.

what watch are you using?

ErichKeane · Wed. 6:28pm

bgrisso
what watch are you using?

Longines Zulu Time (now sold), or a Polar Explorer 2 or a GMT Master 2.

bgrisso · Wed. 6:37pm

I had a black exp 2 but never got completely comfortable with the fixed bezel, sold it. Also had a 1675 which I really liked, but wouldn't take a vintage on most of my trips, not practical for me. Eventually sold that as well. Wouldn't mind a modern GMT of some kind, as I travel a fair bit. Have a Hulk for daily so probably would not get another modern Rolex GMT, would want some variety. Current trip I'm using a $40 timex 😀

Larry S · Wed. 10:50pm

bgrisso
what watch are you using?

ErichKeane
IMO, the 'traveller' GMT movements are just so darn useful for travelling. I typically 'start' my trip with the GMT hand set to GMT time or home-time (depending... rotating bezel I leave it on GMT time so I can flip between pretty easy).

Then, every time I take off, I jump-hour my way to the landing-time-zone. The key is that when travelling, it isn't just 'tracking' a 2nd time zone, it is quickly being able to flip it.

Same. Plus I used it to calculate optimum meeting times for folks in disparate time zones. I got pretty fast.

Larry S · Thurs. 7:59am

bgrisso
I had a black exp 2 but never got completely comfortable with the fixed bezel, sold it. Also had a 1675 which I really liked, but wouldn't take a vintage on most of my trips, not practical for me. Eventually sold that as well. Wouldn't mind a modern GMT of some kind, as I travel a fair bit. Have a Hulk for daily so probably would not get another modern Rolex GMT, would want some variety. Current trip I'm using a $40 timex 😀

My globe hopping watch in the early phase was a dual time Victorinox Maverick purchased on a Lufthansa flight. Battery gave out on a business trip to Dubai (annoying, no time to change it out) . Then I bought a Montblanc GMT auto which looks cool but was unreliable. Bought the Rolex during a seven hour layover in Frankfurt Germany never looked back. It was faster than looking up time zones on my #$¥!!!! Crackberry. IT wouldn’t let us have IPhones at the time. My son still has the Maverick. It’s a great beater.

bsowers34 · Thurs. 8:34am

I would just wear two speedies like @Mad Dog ....

ErichKeane · Thurs. 8:35am

bsowers34
I would just wear two speedies like @Mad Dog ....

What about a strap with a speedy on the front, and a Driver's Chronostop on the wrist?

Mad Dog · Thurs. 9:12am

bsowers34
I would just wear two speedies like @Mad Dog...

Yeppers…I do it fairly often during transcon office duty…works great lasts long time and doesn’t require years of academy training…

Mouse_at_Large · 2026-09-25T07:14:04-0500

This whole GMT faffing about with a fourth hand or setting a subdial misses me completely. If all you need is to set a second timezone easily why not go for a three-hander watch with an adjustable rehaut or bezel? For example:

For a second timezone in 12 hour time

And for the purist, 24 hour time 😁

For everything else, there is either a) mental arithmetic or b) my phone.

noelekal · 2026-09-25T07:28:10-0500

Mouse_at_Large
This whole GMT faffing about with a fourth hand or setting a subdial misses me completely. If all you need is to set a second timezone easily why not go for a three-hander watch with an adjustable rehaut or bezel? For example:

For a second timezone in 12 hour time

And for the purist, 24 hour time 😁

For everything else, there is either a) mental arithmetic or b) my phone.

Yeah, but you're just no fun.

bsowers34 · 2026-09-25T07:41:59-0500

This Casio world timer works too. One button toggle for time zones.

2-counter Speedy for dual time vs GMT

Lu..

bgrisso

Donn Chambers

Larry S

bgrisso

ErichKeane

bgrisso

ErichKeane

bgrisso

Larry S

Larry S

bsowers34

ErichKeane

Mad Dog

Mouse_at_Large

noelekal

bsowers34

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