Three times in 300 years the clocks of history have struck together. 1776. 1914. Now.

The cycles converge now

Of 52 frameworks collected, 23 date their next turn and have at least weak evidentiary standing. 21 of them place it in 2020–2045; the median is 2028. They come from seven independent families: generations and elites, technology and finance, debt and money, world order, U.S. party regimes, social extremes, and land and property.

Two disconfirming cases are kept: Goldstein's hegemony cycle (~2095) and slow reserve-currency succession (~2045). Seven frameworks added in October 2026 (C53–C59), three of them hard series that completed a turn in 2018–25 (populist governments, U.S. tariffs, the U.S. foreign-born share), raise the dated count to 26 of 28.

Three great convergences in 300 years

Using only the 12 frameworks whose records reach back before 1650, a sliding 30-year window finds 12 of 12 turning in 1776–1805 and 11 of 12 in 1908–37, where chance predicts about 4. Neither happens by luck (p < 0.001 anywhere in four centuries). The present window, 2001–30, counts 7 of 12: four turns already in, three dated by the frameworks to 2028–30.

The result survives the checks a critic would ask for. Redraw every turning point anywhere inside its documented dating range, 3,000 times, and both eras stay above chance in over 99% of runs. The four clocks dated without reference to war (prices, defaults, monetary acts, revolutions) turn together too: 4 of 4 in 1776–1805, 3 of 4 in 1908–37. And the frameworks pick out re-ordering wars, not large ones: the Seven Years' War (about a million battle deaths) moved none of the twelve; the smaller French Revolutionary Wars moved all twelve.

America's stress index is at its highest since 1900

Six measures, each ranked against its own history: federal debt, interest as a share of revenue, House polarization, the top 1% income share, trust in government (inverted) and interstate wars. Peaks of 69 (1919) and 63 (1940); trough of 20 (1964); 93 in 2026. The world index, built for the U.S., the EU's five largest economies, China and eight emerging markets, reached 52 in 2025 against its 1941 peak of 53.

The 2025 world reading counts U.S. participation in the June 2025 Iran–Israel war and V-Dem's 2025 downgrade of U.S. democracy.

On data no cycle theorist chose, all three eras run hot

The strongest objection is circularity: some world-order theories date their turns by the great wars themselves. So I built a stress index from seven series chosen by statisticians, not cycle theorists, and left war out entirely: UK debt, debt-service cost, price shocks and real-wage falls since 1700; U.S. debt, price shocks and polarization since 1790.

Each era averages about 60 against 50 by chance. Alone, each could be luck (p ≈ 0.1). All three together: p = 0.0008. On these data, U.S. stress is at its highest since 1790; the UK, the old hegemon, is below average today.

Scored instead against each series' own previous 50 years, so that a long trend can't manufacture a record, all three eras still run hot together (p ≈ 0.0007, about 1 in 1,400), and the present is the hottest of the three.

We are at the front edge

The debt, generational and political clocks have struck. The war and world-order clocks are due within two decades. On 13 clocks dated by data alone, with no historian's judgment, the present collects 9, level with 1914–45 and about twice chance. Five of those turns are confirmed; four rest on series still at their highs (polarization, tariffs, the foreign-born share, trade openness), and those four are signposts.

Unlike 1914–45, today's convergence collides with technologies that cut both ways: AI and digital currencies concentrate power; Bitcoin, strong encryption, open AI models and cheap drones disperse it.

In step, cycles amplify; out of step, they cancel

Treat each cycle as a wave with a phase. In 1792 about 11.4 of 12 long-run cycles were effectively in step, and in 1932 about 10.8: both far beyond chance. In 2026 the figure is 8.2, above chance for this year but not yet exceptional.

The clocks out of step are the money clocks (monetary regime, price revolution, default waves) and the long hegemonic-war cycle. If the money clocks turn around 2030, the amplification roughly triples. Decades when cycles are more in step are measurably more stressed on hard data (correlation 0.68).

The physics is an analogy and a measurement method, not a law. Read the brief.