1998 February 8
100 weeks to Y2K. Many failures already reported
1999 January
One-year projections fail; insurance for Y2K-related losses and liability
becomes popular
January 1
Last year of the 1900s begins; "99" might be a signal
Transition to the Euro begins.
March
Securities Industry Association simulates December 29, 1999, trading
April 1
New York state's, Canadian, Japanese, and U.K. fiscal year (FY) 2000 starts
April 20
255 days left to year 2000
July
Six-month projections fail
July 1
FY 2000 begins in 46 U.S. states
August 22
Global Positioning System (GPS) rolls over from week 1024 to week 0001
September 1
FY 2000 begins in the state of Texas
September 9
9/9/99 often used as default "nonsense" date
September 23
99 days to year 2000
October
Three-month projections fail
October 1
FY 2000 starts in Alabama, Michigan, and the U.S. federal government
October 3
90-day projections fail
December
One-month projections fail; electrical generators sell out; hoarding begins
December 2
30-day projections fail
December 31
Sometimes used as "Never Expires" date (IBM tapes are marked 99365 - all
could expire today.
Blue Friday: Largest one-day sell-off in stock market history;
long lines at ATM machines; support for much software might cease after today,
1999/99/99 a really "nonsense" date
2000 January 1, Black Saturday
Computer passwords expire, locking administrators out of system;
noncompliant systems (fire alarms, heating systems, power grids, telephone
routing and billing, medical care, military, air traffic, Internet, and
financial exchanges) fail; incorrect bills are send out; manual paperwork
begins; unemployment drops; supply chains begin disruption; first
casualties occur; litigation begins. Still twentieth century and
second millennium.
January 3, Monday
First business day of the year 2000 in the U.S.
January 4, Tuesday
First business day of the year 2000 in the U.K.
January 8, Saturday
The first "We Survived" party is held
February 1
The second "We Survived" party is held
February 29, Tuesday
Some major software packages do not think this date exists.
Some say that some PDP-11 computers will not boot after this date.
March 1
Some leap-year errors might not have appeared yesterday
2001 January 1
Third millennium and twenty-first century start
February 29
Will not exist
2002
Transition to the Euro is completed within contiguous Europe
January 1
Burroughs Unisys A Series system date fails
2005
Some really old versions of UNIX (e.g., 16 bit BSD) die this year
2009
FAA finishes its Year-2000 preparations (U.S.)
2020 January 1
Systems still using 1920 as a pivot year fail
Macintosh (System 6.0.4+) Date & Time Control Panel can no longer set
the current date
2023 December 23, Sunday
End of the world, according to Mayan calendar
2030 January 1
Systems still using 1930 as pivot year fail
2036 January 1
Burroughs Unisys A Series system date fails
February 6
2**32 seconds from January 1, 1900
2038 January 19
UNIX: 2**31 seconds from January 1, 1970
2040 February 6
At 06:28:16, old Macs' longword seconds from January 1, 1904, overflow
2042 September 17
IBM 370 TOD clock overflows
2044 January 1
MS-DOS: 2**6 years from 1980, setting the most significant bit (MSB).
Signed variables using this get a negative date
2046 January 1
Amiga system date failure
June 8
Some UNIX password aging fails; 64*2 weeks from 1970
2049 December 31
Microsoft Project 95 limit
2078 December 31
Excel 7.0: The Last Day
2079 June 6
2**16 days from January 1, 1900
2080 January 1
MS-DOS file dates, displayed with two-digit years, are now ambiguous
2100 January 1
Y2.1K: most current PC BIOSes run out of dates; MS-DOS DIR renders
the file-date years 2100 through 2107 as 99
2106 February 7
UNIX 2**332 seconds from January 1, 1970; time overflows at 06:28:16
2108 January 1
MS-DOS: 2**7 years from 1980; file date overflows
2738 November 28
Approximate day of A.D. 1 million
4338 November 28
COBOL-85 integer day 1,000,000 exceeds six-digit field 9999;
HTTP caching fails
10000 January 1
Y10K: four-digit years fail
29602 January 1
Microsoft Windows NT File System (NTFS) fails
29940
New Macs' signed 64-bit time fails (has been OK since 30,081 B.C.)
31086 July 31
Internal Digital Equipment VMS time fails at 02:48:05.47
60056
Win32 64-bit time fails (started from January 1, 1601)
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