This article is from the Storms FAQ, by Chris Landsea firstname.lastname@example.org with numerous contributions by others.
Hurricane/Typhoon John lasted 31 days as it traveled both the
Northeast and Northwest Pacific basins during August and September 1994.
(It formed in the Northeast Pacific, reached hurricane force there, moved
across the dateline and was renamed Typhoon John, and then finally
recurved back across the dateline and renamed Hurricane John again.)
Hurricane Ginger was a tropical cyclone for 28 days in the North Atlantic
Ocean back in 1971.