1900 - Start of IBM/360 64 bit clock Start of Lotus/Spreadsheet world 1904 - Start of original Apple Mac clock 1920 - Current Start of Apple Mac World 1960 - IBM/360 1970 - IBM/370 1971 - IBM Clock rollover 1972-08-16 - 9999 days to 2000 (OS catalog corrupts) 1980 - IBM 4300 1980-08-01 - MS DOS Default startup date 1986-06-30 - Deadline 2000 starts 1986-07-21 - Deadline 2000 ends 1986 - ISO 8601 defines YYYYMMDD standard 1987 - MVS SVC11 changes VM IPL 01/01/00 to 2000 1988-07-30 - FIPS 4-1 YYYY standard in effect 1995 - Peter de Jager - Datamation www.year2000.com on the air US Congress Technical Committee IBM announces Year 2000 ready ESA 1996-01-01 - UNISYS 8bit clock rollover Datamation Year 2000 issue 1996 - US Congress subcommittees 1996-11-19 - www.cinderella.co.za on the air 1996-12-13 - IBM announces VSE/ESA2.2 Y2k ready 1997-01-01 - Datamation Year 2000 issue 1997-03-18 - New York Stock Exchange trades on de Jager Index 1997-04-07 - 999 days to 2000 (catalogs?) 1997-10 - US Government Progress Reviews 1998-12 - US Government deadline for Mission Critical apps 1999-01-01 - US Government deadline 1999-08 - GPS 10bit counter rollover 1999-12-31 - PC BIOS Tickover problem: Set the clock early! Party Time 2000-01-01 - Last year of the 20th Century Meltdown? 2001-01-01 - Start of 21st Century 2019 - Original Apple Mac end of world 2038 - UNIX signed 32bit timer rolls over 2040 - Current Apple Mac end of world 2042 - IBM 64bit clocks rolls over 2099 - MSDOS x86 end of world