= Gigaseconds = ------------------- [[ 2Gs ]] PARTY! 2017/01/20 ------------------- . 2 billion seconds is: ||<)> 23148 || days ||<)> 1999987200 || ||<)> 3 || hours ||<)> 10800 || ||<)> 33 || minutes ||<)> 1980 || ||<)> 20 || seconds ||<)> 20 || . Does not include leap seconds (27 of them so far, so subtract 27 seconds . Birth time was daylight savings time, fall back subtracts an hour . hence: 23148 days 2 hours, 32 minutes, 53 seconds . My birth certificate says 1953, 5 September, 0745 (PDT) . So my 2 gsec time of day is 1017 and 53 seconds . presumably plus or minus 10 minutes, they were watching a birth, not the clock or the paperwork === Keith Lofstrom's Gigasecond calendar: === . Based on numbers from https://www.araneus.fi/gigasecond/ ... which overestimates the gigasecond by 40 seconds . Before the 1930s, the interpretation of daylight savings time and time zones varied. . Before the 1800s, time measured down to the minute was rare in everyday usage . Before the 1600s, few mechanical clocks could measure seconds . Dates before 1753 (in protestant Europe) may have been Julian rather than Gregorian Calendar, an 11 day date difference || || || PST day || GMT || PST || PDT || || || -9 Gs || 1688 || June 23 || 2251 || 1451 || || Saturday || || -8 Gs || 1700 || March 2 || 0037+1d || 1637 || || Tuesday || || -7 Gs || 1731 || November 9 || 0223+1d || 1823 || || Friday || || -6 Gs || 1763 || July 18 || 0409+1d || 2009 || || Monday || || -5 Gs || 1795 || March 26 || 0555+1d || 2155 || || Thursday || || -4 Gs || 1826 || December 03 || 0741+1d || 2341 || || Sunday || || -3 Gs || 1858 || August 12 || 0927 || 0127 || ? || Thursday || || -2 Gs || 1890 || April 20 || 1113 || 0313 || || Sunday || || -1 Gs || 1921 || December 28 || 1259 || 0459 || || Wednesday || ||'''0 Gs'''||'''1953'''||'''September 5'''|| 1445 ||(0645)||'''0745'''||'''Saturday'''|| || 1 Gs || 1985 || May 14 || 1631 || (0831) || 931 || Tuesday || || 2 Gs || 2017 || January 20 || 1817 || 1017 || || Friday || [[ 2Gs | Party! ]] || || 3 Gs || 2048 || September 28 || 0303 || (1103) || 1203 || Saturday || Mark your calendar || || 4 Gs || 2080 || June 6 || 2049 || (1249) || 1349 || Thursday || Mark your grandchildren's calendar || || 5 Gs || 2112 || February 14 || 2235 || 1435 || || Sunday || || || 6 Gs || 2143 || October 23 || 0021+1d || 2143 || || Wednesday || == Binary (Greater) Gigaseconds AKA Gibiseconds == . 2^31 seconds is 2147483648 (decimal) seconds is: ||<)> 24855 || days ||<)> 2147472000 || ||<)> 3 || hours ||<)> 10800 || ||<)> 14 || minutes ||<)> 840 || ||<)> 8 || seconds ||<)> 8 || === Keith Lofstrom's Gibisecond calendar: === . Based on numbers from https://www.araneus.fi/gigasecond/, similar caveats as before || || || PST day || GMT || PST || PDT || || || -9 Gis || 1647 || June 13 || 1647 || (0847) || 0947 || Thursday || || -8 Gis || 1681 || June 21 || 0149+1d || (1749) || 1849 || Saturday || || -7 Gis || 1715 || July 2 || 1526 || (0826) || 0926 || Tuesday || || -6 Gis || 1749 || July 10 || 0503+1d || (2103) || 2203 || Thursday || || -5 Gis || 1783 || July 20 || 1840 || (1040) || 1140 || Sunday || || -4 Gis || 1817 || July 30 || 0817 || (0017) || 0117 || Wednesday || || -3 Gis || 1851 || August 08 || 2154 || (1354) || 1454 || Friday || || -2 Gis || 1885 || August 17 || 1131 || (0331) || 0431 || Monday || || -1 Gis || 1919 || August 27 || 0108+1d || (1708) || 1808 || Friday || ||'''0 s'''||'''1953'''||'''September 5'''|| 1445 ||(0645)||'''0745'''||'''Saturday'''|| || 1 Gis || 1987 || September 14 || 0422+1d || (2022) || 2122 || Monday || || 2 Gis || 2021 || September 23 || 1759 || (0959) || 1059 || Thursday || || 3 Gis || 2055 || October 3 || 0736 || (2336) || 0036 || Sunday || || 4 Gis || 2089 || October 11 || 2113 || (1313) || 1413 || Tuesday || || 5 Gis || 2123 || October 22 || 1050 || (0250) || 0350 || Friday || || 6 Gis || 2157 || October 30 || 0027+1d || 1627 || 1727 || Sunday ||