2020 date limit

The 2020 date limit is a date-related software bug that is triggered in Macintosh computers running Mac OS 9.0.3 (or earlier) on January 1, 2020 and onwards.
Though Apple's classic Hierarchical File System can manage dates up to February 6, 2040, the Date & Time control panel prior to Mac OS 9.0.4 is incapable of setting dates past December 31, 2019. An early workaround was to download Rob Braun's SetDate utility.Solving Mac OS 8’s Y2K20 Bug by Josh Centers, TidBITS. 2020-01-03. In April 2020, a method to patch the bug was published on a blog.Macintosh Y2020 by BG, The Long View. 2020-04-05.
Apple addressed the 2020 issue with the an updated control panel in Mac OS 9.0.4. In September 2017, the introduction of the Apple File System (APFS) in macOS 10.13 addressed the 2040 date limit.Decoding the APFS file system by Kurt H. Hansen and Fergus Toolan, Norwegian Police University College. 2017-04-22. Revised 2017-06-21.
==References==
==See also==
*2036 date limit, a timestamp limit in Network Time Protocol version 3 and earlier.
*2038 date limit, an old Unix-based limitation of Mac OS X versions before 10.6.
*2040 date limit, a timestamp limit in the Hierarchical File System.
*2554 date limit, a timestamp limit in the Apple File System.
==External links==
*Technote 1049: Approaching the Millennium: The Mac and the Year 2000 by Brian Bechtel at Apple (1996-06, archived 1997-06-15)
*The Y2K20 Bug - Classic Mac OS at Applefritter (2020-01-03)
*The Looming Y2K20 Bug, and How to Protect Your System. at Low End Mac (2019-12-16)
* at Wikipedia
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Category:Software bugs
Category:2020