OK, so when was the longest shutdown in US history?

The US government officially shut down at 12:01 a.m. on Wednesday after senators failed to agree on a last-minute funding bill. Though initially shrugging off the threat of a shutdown during yesterday’s session, stocks were mildly in the red on Wednesday as investors reacted to what is now the 11th shutdown in the government’s history.

Until this latest shutdown, there had been 20 government funding gaps experienced since 1976 — though not all ended in a full shutdown, with full closure averted in half of those cases.

Indeed, prior to the 1980s, funding gaps didn’t typically have major effects on government operations, with agencies continuing to operate on the basis that the funding would come eventually. However, a more stringent interpretation of the rules led to a stricter appropriations process from the early 1980s onward, with many subsequent funding gaps resulting in a shutdown of affected agencies (unless the gaps were quickly fixed or occurred over a weekend).

Obviously, the duration of the latest shutdown is still unclear, but it will continue until Congress passes a funding bill — most likely via a “continuing resolution,” which has ended every shutdown since 1990. Data analyzed by USAFacts suggest that it might not be a one- or two-day affair, as funding gaps have lengthened in recent years.

Indeed, the last shutdown, which began in December 2018, ended up becoming the longest in history, at a whopping 34 days. By the time the government reopened in January 2019, about $3 billion (in 2019 dollars) had been wiped from the GDP in Q4, per data from the Congressional Budget Office, with approximately $18 billion in “federal discretionary spending” delayed over the roughly five-week stretch.