ESTIMATEDDate confidence: ESTIMATEDA target, not a fixed dateHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all ESTIMATED pins95% CONFIDENCEOverall confidence: 95%How well the pin's source and references back up its dates.Weighted average of how firmly 2 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
Only the year is supported. 1993-01-01 is a timeline anchor, not a confirmed operating day. A severe energy shortage leads to a restart decision. Only the year is established; January 1 is an estimated timeline anchor.[1]A severe energy shortage leads to a restart decision. Only the year is established; January 1 is an estimated timeline anchor.
1.00