Notes on the Ancient Egyptian Calendar
TIMELINE BC 4713-01-01 - (noon) Start of Julian (Scaliger) day count (JD), coincidence of 28 year solar, 19 year lunar, and 15 year indiction cycle. 4000 - Ancient Egyptian Calendar (Lunar) 3000 - Menes unites Upper and Lower Egypt 2600 - Mayan civilisation 2344 - Hebrew Deluge 2300 - Abraham leads Hebrews from Mesopatamia to Canaan 2000 - Stonehenge 1500 - Hebrew Border settlers become Egyptian labourers 1360 - Tutankhamen 1300 - Moses. Exodus. Ten Commandments. 1274 - Joshua invades Canaan. 1200 - Egyptian Sothic (Ptolemaic) Calendar (Solar) 1000 - Chinese Shang Dynasty 1000 - David conquers Palestine, Jerusalem as capital 753 - Start of Roman Calendar (Lunar) 332 - Alexander invades Egypt. 238 - Ptolemy III decrees every 4th year a leap year 200 - Mayan Calendar 165 - Revolt of the Maccabees 62 - Pompey subdues Judea 46 - Julian Calendar (Solar - 365.25 days) Roman Year 709 44 - Julius Caesar assassinated (Roman Year 711) 30 - Death of Cleopatra. (Roman Year 723) - End of Egyptian Dynastic period (4000BC-30BC) 0000-00-00 - Special value used by programmers AD 1 - Start of Christian Era (Roman Year 753) 1325 - Aztec Calendar 1582 - Gregorian Calendar (Solar- 400th year not leap) 1582-10-15 - Lilian Day 1 1752 - British Government (including American colonies) adapt Gregorian calendar adopts Gregorian Calendar 1900 - Start of IBM/360 64 bit clock 1901-01-01 - Start of Lotus/Spreadsheet world 1904 - Start of original Apple Mac clock 1918 - Soviet Union adopts Gregorian Calendar 1920 - Current Start of Apple Mac World 1949 - Communist China adopts Gregorian Calendar 1960 - IBM/360 1970 - IBM/370 1971 - IBM Clock rollover 1972-08-16 - 9999 days to 2000 (OS catalog corrupts) 1979-02-01 - Interface Age, Bob Bemer article 1980 - IBM 4300 1980-08-01 - MS DOS Default startup date (Zero date) 1986-06-30 - Deadline 2000 starts 1986-07-21 - Deadline 2000 ends 1986 - ANSI X3.30 defines YYYYMMDD standard 1987 - MVS SVC11 changes VM IPL 01/01/00 to 2000 1988-07-30 - FIPS 4-1 YYYY standard in effect 1988 - ISO 8601 defines YYYY-MM-DD standard (but also allows 2 digit forms) 1991 - Chris Anderson writes about 4 digit years in MSDOS 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 1996-11-06 - comp.software.year-2000 begins 1996-11-15 - First "More Y2k Links" report 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 1998-08-19 - Global Y2k Awareness Day 1998-12 - US Government deadline for Mission Critical apps 1999-01-01 - US Government deadline 1999-02-26 - SA Government Gazette on local government 1999-08-21 - GPS EOW 10bit counter rollover 99-09-09 - Special value used by programmers 1999-12-31 - PC BIOS Tickover problem: Set the clock early! Public Holiday in South Africa Party Time 99/365 - End of Pseudo Julian world 99-99-99 - Special Value used by programmers 2000-01-01 - Last year of the 20th Century Overflow of 2 digit years causes Meltdown? 2000-01-03 - Public Holiday in South Africa 2000-1-10 - First 9-character date 2000-02-29 - Leap Year 2000-10-10 - First 10 character date 2000-12-31 - 366th day of 2000 2001-01-01 - Start of 21st Century 2001-01-01 - Overflow Tandem Systems 2001-09-08 - Unix date 999,999,999 2010-01-01 - Overflow ANSI C library 2019 - Original Apple Mac end of world 2034-09-30 - Overflow Unix time function 2038-01-19 - UNIX signed 32bit timer rolls over 2040 - Current Apple Mac end of world 2042-09-18 - IBM 64bit clocks rolls over 2099 - MSDOS x86 (FAT 7 bit year) end of world 2100-01-01 - Not a leap year 2101-01-01 - Start of 22nd Century 3000-01-01 - Not a leap year 9999-99-99 - Special value used by programmers