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In Japan, 2019 Was Two Different Years

Japan has somewhere between 2.6 and 5 million vending machines, depending on who is counting and when. The Japan Vending System Manufacturers Association put the figure at about 2.6 million as of December 2024; older estimates from the industry's peak run past 4 million.

Whichever number you take, the ratio is the same story: roughly one machine for every 23 to 30 people — the highest density on Earth. Beverage machines alone number over two million.

The United States has a comparable total, spread across a country twenty-five times larger with nearly three times the population.

The machines are not tucked inside shops. They stand outdoors, unattended, on public pavements, at train stations, at mountain trailheads, inside shrine precincts and beside rice paddies in the middle of nowhere — lit all night, full of cash and stock, for decades at a time. The industry's own explanation is blunt: vandalism is a rounding error.

Most sell hot and cold drinks from the same machine at the same time, marked あったか～い in red and つめた～い in blue.

And the ancestry is better than it needs to be. Japan's first vending machine was patented in 1888 by Tawaraya Koshiki, in what is now Shimonoseki. It dispensed tobacco, and the mechanism was adapted from karakuri — traditional Japanese clockwork automata.

The vending machines are descended from wind-up dolls.

The clock: which is a reasonable place to start on a country that runs two calendars at once and expects everyone to keep up.

Japan uses the Gregorian calendar, seireki, and alongside it wareki, which counts years by the reign of the emperor. The current era, Reiwa, is the 232nd, and it began on 1 May 2019.

Because an era ends when a reign ends, and reigns do not wait for January, the year 2019 was two years in Japan: Heisei 31 until 30 April, Reiwa 1 from 1 May.

A machine left alone on a mountain path for twenty years, and a calendar where the year number can change in the middle of April. Both work for the same reason: everybody knows the rules and nobody needs supervising.

Japan runs two calendars side by side. There is seireki (西暦), the Gregorian calendar used everywhere else. And there is wareki (和暦), which counts years by the reign of the emperor.

Each era has a name — a gengō (元号) — chosen by the Cabinet on the advice of a panel of scholars. When a new emperor accedes, the era changes and the year count resets to one. The first year is not called year 1 but gannen (元年), "origin year."

The current era is Reiwa (令和), officially translated by Japan's foreign ministry as "beautiful harmony." It began on 1 May 2019, when Emperor Naruhito acceded — the day after Emperor Akihito abdicated, the first Japanese imperial abdication in roughly two hundred years.

It is the 232nd era in the official calendar.

So the Gregorian year 2026 is Reiwa 8 (令和8年). The arithmetic is: Western year minus 2018.

The clock: here is the consequence that catches people out.

An era ends when a reign ends, which can happen on any day of any month. It does not wait for January.

So the Western year 2019 was, in Japan, two years. From 1 January to 30 April it was Heisei 31. From 1 May to 31 December it was Reiwa 1. A document dated in that year is correct under either name, depending on which side of 30 April it falls.

The system is not ceremonial. It appears on tax forms, residence certificates, driving licences, government budgets and legal paperwork. Printed forms often abbreviate the era to a single Roman letter — R for Reiwa, H for Heisei, S for Shōwa, T for Taishō, M for Meiji — so a date on a Japanese licence can read R8.5.7, meaning 7 May 2026.

There is one more layer underneath, rarely used: kōki (皇紀), the imperial calendar, which counts from the legendary founding of Japan in 660 BC. By that reckoning, 2026 is the year 2686.

And the clock itself? Japan runs on UTC+9, built for the 135th meridian. Tokyo sits at nearly 140° east — meaning Tokyo is one of the few cities in this series whose clock runs behind its own sun, by about nineteen minutes.

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