- September 22 is the date when Oceanic Flight 815 left Sydney Australia bound for Los Angeles, CA
- September 22 is the autumnal equinox, the date when night and day are nearly of the same length and the sun crosses the celestial equator (i.e., declination 0) moving southward (in the northern hemisphere). In the southern hemisphere, the autumnal equinox corresponds to the center of the Sun crossing the celestial equator moving northward and occurs on the date of the northern vernal equinox. The autumnal equinox marks the first day of the season of autumn.
- The show first aired in the U.S. on September 22, 2004
- An alternate flight date is September 22 1998. From the Oceanic website it list September 22 as being Tuesday.
Theories
- One theory suggests that the show is set in 2009. September 22 is on a Tuesday in 2009. Also, the producers said in a podcast that they never said that the plane crashed in 2004; they only stated that the show started in 2004. The Oceanic website also listed their copyright date in 2009. Furthermore, luggage tag reads 09SEP21.