A 24-hour watch turns its hour hand once a day instead of twice, so one glance tells you whether it's 3 in the afternoon or 3 in the morning. A 12-hour watch needs you to know that from the light outside.
The hour hand on a 12-hour watch goes round the dial twice a day, while on a 24-hour watch it makes a single turn, so noon and midnight sit at opposite ends of the dial. On the Raketa 24-hour watches we sell, midnight is at the top and noon is at the bottom.
A 24-hour watch suits shift workers and people who cross time zones, and it works well in polar regions, where daylight says nothing about the hour. For everyday wear a 12-hour watch is quicker to read, and you'll find far more models to choose from.
Below we explain how each format works and how to read a 24-hour dial, and then we look at watches that show both formats at once. Further down you'll find where the 24-hour day came from. Every example comes from watches we've had in our shop, with their real prices.
We've listed 17 Raketa 24-hour watches so far, and the first thing a new owner asks is why the hand points down at lunchtime. After a day on the wrist, they read it as quickly as a normal watch.
What Is a 24-Hour Watch?
A 24-hour watch has a dial marked from 1 to 24 and an hour hand that makes one full turn in 24 hours. The minute hand still goes round once an hour, just as it does on any other watch, and only the hour hand runs at half its usual speed.
In a mechanical watch, that slower hour hand needs its own gearing. Our Raketa 24-hour watches run on the caliber 2623.H, a movement Raketa built for this layout. A standard 12-hour movement fitted with a 24-hour dial would show the wrong time, which matters when you buy one vintage.
People also use the term for a digital watch set to 24-hour mode, or for a normal 12-hour watch with an extra ring of 13 to 24 on the dial, which we cover further down.
12-Hour vs 24-Hour Watch: The Difference
The table sums up how the two formats work on an analog watch.
| 12-Hour Watch | 24-Hour Watch | |
|---|---|---|
| Hour hand turns per day | Two | One |
| Dial numbers | 1 to 12 | 1 to 24, or every second hour |
| Noon and midnight | Both at the top | Opposite ends of the dial |
| Space between hours | 30 degrees | 15 degrees |
| Day or night at a glance | No | Yes |
| Typical wearers | Everyday wear | Pilots, polar crews, navy, shift workers |
| Vintage examples from our shop | Almost every dress watch | Raketa 24 Hours, Raketa Polar |
The 15-degree spacing has a cost, because the hours sit twice as close together on a 24-hour dial and the hour hand alone gives only a rough reading. On a 24-hour watch you take the exact minute from the minute hand and use the hour hand to see the part of the day.
How to Read a 24-Hour Watch
Reading a 24-hour dial takes a day of practice. We'll use our Raketa as the example, with midnight at the top and noon at the bottom.
- Find the part of the day first. An hour hand in the top half of the dial means it's night, and one in the bottom half means it's daytime.
- Read the hour from the number. A hand pointing straight right shows 6 in the morning. Noon sits straight down, and 18:00, or 6 in the evening, sits straight left.
- Read the minutes as usual. The minute hand turns once an hour, exactly as on a 12-hour watch.
So if the hour hand points halfway between the bottom and the left, and the minute hand points to 6, the time is 15:30. Not every 24-hour watch puts midnight at the top, so check the numbers on your own dial before you rely on it.
Watches That Show Both 12-Hour and 24-Hour Time
If you want 24-hour time without learning a new dial, you can pick a watch that shows both formats, and watchmakers found a few different ways to do it.
A 13–24 Ring on a Military Dial
Some military watches from the 1940s onward carry a second ring of numbers from 13 to 24 inside the usual 1 to 12. The hands run on a normal 12-hour movement, and the wearer reads the inner number in the afternoon. We sold a 1943 Universal Genève military watch with an inner 24-hour scale for $1,359, and a Vostok Komandirskie with the same feature for $389.
Armed forces adopted the 24-hour clock in the early 20th century, which explains these rings. According to Wikipedia's history of the 24-hour clock, the Royal Navy switched in 1915, the British Army in 1918 and the US Army on 1 July 1942. Our article on the Dirty Dozen watches covers the British military watches of that period.
A GMT Hand
A GMT watch has a normal 12-hour dial plus a fourth hand that turns once in 24 hours. Pilots used it to keep their home time while the main hands showed local time. Rolex built the GMT-Master in the 1950s for Pan Am crews flying across time zones.
A Rotating 24-Hour Bezel or World-Time Ring
Some watches put the 24-hour scale on a bezel or ring around the dial. Glycine launched its Airman in 1953 with a 24-hour dial and a rotating 24-hour bezel for a second time zone. According to Gear Patrol's history of the Airman, the idea came from a pilot on a flight between Bangkok and Calcutta. We sold a Raymond Weil Parfisal GMT Worldtimer with a 24-hour ring and a bezel of world cities for $1,371.
Where the 12-Hour and 24-Hour Formats Come From
People have split the day into 24 hours for more than three thousand years. The difference between cultures lies in whether they count those hours in one run or in two halves of 12.
You'll read online that the 12 hours come from the lunar cycle or from 12 constellations, but we couldn't find a source for that. The earliest evidence points to Egypt, where the day and the night each had 12 hours that changed length with the seasons.
The early Italian clocks used a system called Italian hours, which counted from sunset and suited people who planned their day around the light. According to a UK government report that Wikipedia cites, Italy moved to modern 24-hour time nationally in 1893.
Why Polar Crews Wanted a 24-Hour Watch
In Antarctica the sun stays up for weeks in summer and down for weeks in winter. A 12-hour watch can't tell you if it's 4 in the morning or 4 in the afternoon. Raketa says it built its Polar watch in 1970 for the 16th Soviet Antarctic Expedition, so that explorers could tell day from night by the dial alone. The Raketa 24-hour watches in our shop follow the same idea.
Which Countries Use the 12-Hour Clock?
The 12-hour clock survives mainly in countries that were once part of the British Empire, and elsewhere people write time in 24-hour format. Wikipedia's article on the 12-hour clock lists the United States, the United Kingdom, Ireland, Canada outside Quebec, Australia, New Zealand, South Africa, India, Pakistan and Bangladesh, along with Mexico, Colombia and the Philippines.
Even in those countries, hospitals, transport, science and the military use 24-hour time. Americans call it "military time," and in the UK, Australia and New Zealand you'll see both formats side by side, on timetables and on the BBC.
Which Format Should You Choose?
For a daily watch we find the 12-hour dial easier, since you read it without thinking. Almost every watch ever made uses it, so you can choose from any style you like.
A 24-hour watch makes sense when daylight doesn't help you. Night-shift workers and pilots can tell morning from evening at a glance, and so can anyone who travels across time zones. It also makes a good second watch for a collector, because the dial looks unlike anything else in a collection.
If you want both, a GMT watch or a military watch with a 13–24 ring gives you 24-hour time on top of a familiar 12-hour dial.
| If You… | Consider |
|---|---|
| Want one watch for everyday wear | A 12-hour watch |
| Work night shifts or live with long polar days | A 24-hour watch, such as a Raketa 24 Hours |
| Travel across time zones | A GMT watch or a world timer |
| Like military history | A 12-hour military watch with a 13–24 ring |
Buying a Vintage 24-Hour Watch
A vintage 24-hour watch costs less than you might expect. The 17 Raketa 24-hour watches we've listed sold for, or carry prices of, between $217 and $560. A special dial can push the price higher, and our Raketa Antarctic Expedition with a map of Antarctica sold for $571 in a 34mm case. Swiss watches with a 24-hour scale cost more, and the two we've sold went for $1,359 and $1,371.
The first thing to check is the movement. A real Raketa 24-hour watch runs on a 24-hour caliber, such as the 2623.H, and the hour hand takes a full day to go round. A 24-hour dial on a standard 12-hour movement will show the wrong time. When you set the watch to noon, the hour hand should point straight down.
After that, look at the dial as you would on any vintage watch. The printing should be crisp and the aging even, and the hands should match the dial. Our article on the value of Soviet watches explains what makes one Raketa worth more than another.
Before we list a Raketa 24 Hours, we set it to noon and leave it running for a day to make sure the hour hand comes back to the bottom of the dial. That simple test tells us the movement and the dial belong together.
Our favorite was the Raketa Antarctic Expedition with the map of Antarctica on the dial. It sold for $571, and it showed us how much a dial with a real story adds to an ordinary watch.
24-Hour Watches We've Sold
Every watch we list stays on our site after it's sold, so you can still see the photos and details. These are some of the 24-hour and military-time watches that have found new owners, with the prices they sold for.
Raketa · Cal. 2623.H
Marine 24h Polar, 40mm
Sold · $526
Raketa · 24 Hours
Antarctic Expedition, 34mm
Sold · $571
Raketa · 24 Hours
KSF, Northern Fleet Dial, 1990s
Sold · $217
Raymond Weil · GMT
Parfisal Worldtimer, Ref. 2989
Sold · $1,371
Universal Genève · Military
Inner 24-Hour Scale, Cal. 267, 1943
Sold · $1,359
Vostok · Komandirskie
Red Star, Inner 24-Hour Scale
Sold · $389
You can see the Raketa 24-hour watches and other Soviet watches we have now in our Soviet watch collection, with prices as of October 2026.
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