On Thursday, the U.S. hits its 31.4 trillion-dollar debt limit. If Congress fails to raise or suspend the limit, the U.S. risks defaulting on its foreign debt with global economic ramifications. So naturally, Steno Research is launching a new ‘U.S. Debt Countdown’ watch series to keep tabs on when the U.S reaches the magic ‘X Date’: the day when The Treasury runs out of ‘extraordinary measures’ to postpone the worst-case scenario, and must succumb to default.