On the morning of January 1, 1873, Japan woke up in a different century. Not metaphorically — the country had literally skipped forward in time. The day before had been December 2 on the old lunar calendar. There was no December 3. The Meiji government had simply deleted it, along with the rest of the month, and declared that the next sunrise would be January 1 of a brand-new Western-style calendar.

The decision had been announced barely three weeks earlier, on November 9, 1872, throwing the entire nation into confusion. Calendar printers who had already shipped next year's almanacs were ruined overnight. Farmers who relied on the lunar cycle to time their planting stared at the new dates in bewilderment. And across the country, people who had been preparing for New Year's festivities on the old schedule — still weeks away — suddenly found themselves celebrating whether they were ready or not.

The official justification was modernization: Japan needed to align with Western nations for diplomacy and trade. But the real motivation was far more mundane. The government had recently switched its employees from annual stipends to monthly salaries. Under the old lunar calendar, 1873 would have contained a leap month — thirteen months instead of twelve — meaning the treasury would owe an extra month's pay it simply could not afford. By jumping to the solar calendar and declaring the two-day-long December of 1872 too short to warrant a paycheck, the government saved itself two full months of salaries in a single stroke.

For the warrior class — already stripped of their swords and topknots — the loss of the old calendar was one more thread cut from the fabric of their world. Every samurai ritual, every festival, every seasonal observance had been timed to the moon. Now even the moon had been fired.