Eternal September or the September that never ended[1] is Usenet slang for a period beginning in September 1993,[2] the month that Internet service provider America Online began offering Usenet access to its many users, overwhelming the existing culture for online forums. The influx in Usenet users was also indirectly caused by the aggressive direct mailing campaign by AOL Chief Marketing Officer Jan Brandt in order to beat out CompuServe and Prodigy, which most notably involved distributing millions of floppy disks and CD-ROMs with free trials of AOL.[3]

Before then, Usenet was largely restricted to colleges and universities. Every September, a large number of incoming freshmen would acquire access to Usenet for the first time, taking time to become accustomed to Usenet’s standards of conduct and “netiquette“. After a month or so, these new users would either learn to comply with the networks’ social norms or tire of using the service.

Whereas the regular September freshman influx would quickly settle down, the influx of new users from AOL did not end, and Usenet’s existing culture did not have the capacity to integrate the sheer number of new users following September 1993.[4][5] Since then, the popularity of the Internet has brought on a constant stream of new users and thus, from the point of view of the pre-1993 Usenet users, the influx of new users in September 1993 never ended.

Dave Fischer coined the term in a January 1994 post to alt.folklore.computers: “It’s moot now. September 1993 will go down in net.history as the September that never ended.”[6]

In homage to the term, one news server, formerly named,[7] calls itself Eternal September and gives the date as a running tally of days since September 1993.[8]

A tongue-in-cheek program called sdate outputs the current date, formatted using the Eternal September calendar (September X, 1993, with X an unbounded counter for days since that epoch).[9] This is not the identically named sdate, one of the sixty commands that comes with the First Edition of Unix, that is used to set the system clock.[10]

The term is alluded to in Thomas Pynchon’s 2013 novel Bleeding Edge, centered largely around dot-com era Silicon Alley, where a “disused techies’ saloon” is named ‘Eternal September’.[11]


  1. ^ Eric Raymond. “September that never ended”. The Jargon File (version 4.4.7). Retrieved 2008-09-13. 
  2. ^ “The Year September Never Ended” net.wars Chapter 1, Wendy M. Grossman, NYU Press, 1998. Archived June 26, 2006, at the Wayback Machine.
  3. ^ Siegler, MG (27 December 2010). “How Much Did It Cost AOL To Send Us CDs In The 90s? “A Lot!”, Says Steve Case”. Retrieved 4 March 2017. 
  4. ^ “The Making of an Underclass: AOL” net.wars Chapter 3, Wendy M. Grossman, NYU Press, 1998.
  5. ^ Lily Rothman (May 22, 2015). “A Brief Guide to the Tumultuous 30-Year History of AOL”. Time. 
  6. ^ Walter Isaacson (2014). The Innovators: How a Group of Inventors, Hackers, Geniuses, and Geeks Created the Digital Revolution. Simon & Schuster. p. 401. ISBN 978-1476708690. 
  7. ^ “ will Become on July 1, 2009”. Archived from the original on 3 February 2013. 
  8. ^ “”. 
  9. ^ “Never Ending September Date –”. 
  10. ^ “sdate(1) – Unix First Edition Manual Page”. 
  11. ^ Pynchon, Thomas (2013). Bleeding edge. London: Jonathan Cape. p. 174. ISBN 9780224099028. 

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