![]() The Age of Humans - the Holocene epoch (8,000 yearsĪpproximately 4600 million years ago - The Hadean Period (4600 m.y.Glaciation, the Moa and Homo sapiens - the Pleistocene.The first hominids - the Pliocene epoch (5.3 m.y.Kelp forests and horses - the Miocene epoch (23.8 m.y.Grasses and primates - the Oligocene epoch (33.7m.y.Whales and horses - The Eocene epoch (55.5 m.y.The final season of the dinosaurs - The.Dinosaurs and birds - the Jurassic period (213 m.y.Mammals and dinosaurs - the Triassic period (248m.y.-213m.y.).Pangea - the Permian period (286m.y.- 248m.y.).Reptiles and Conifers - the Carboniferous Period (360m.y.Invasion of the land - the Devonian period (410m.y.Venturing on land - the Silurian Period (440 m.y.The Rise of the fish - The Ordovician Period (505.The Cambrian Explosion - The Cambrian Period. ![]() The first algae - 1200 million years ago - The Proterozoic.Birth of Earth - approximately 4600 million yearsĪgo - The Hadean Period (4600 m.y.List of useful reference websites at the very end of the sections Their biological and geological significance. The evolution of life is organised into 20 sections referring to For further information on each geological period or special life forms mentioned, there are links to other websites about this time. Prokaryotes, for example are the most successful and abundant organisms on Earth, in both numbers and biomass and still make up to 90% of the total weight of living things. Many life forms that were not mentioned in this text were very successful and have evolved or in some cases maintained a very successful life strategy. However this should not give the impression that the evolution of life on Earth is or was a sequential event. For reasons of simplicity some important events and life forms were selected for each geological time span. JavaScript does not support leap seconds.This section provides information about the evolution of life on Earth. Some browsers use the current DST (Daylight Saving Time) rules for all dates in history. Please note: All tools on this page are based on the date & time settings of your computer and use JavaScript to convert times. More date related programming examples: What's the current week number? - What's the current day number? Thanks to everyone who sent me corrections and updates! Works for Windows PowerShell v1 and v2Ĭommand line: perl -e "print scalar(localtime( epoch))" (If Perl is installed) Replace 'localtime' with 'gmtime' for GMT/UTC time. ![]() Math.floor(new Date().getTime()/1000.0) The getTime method returns the time in milliseconds.ĭATETIME() -, then use: get-epochDate 1520000000. SELECT dbinfo('utc_current') FROM sysmaster:sysdual ![]() SELECT (CAST(SYS_EXTRACT_UTC(SYSTIMESTAMP) AS DATE) - TO_DATE('','DD/MM/YYYY')) * 24 * 60 * 60 FROM DUAL SELECT unix_timestamp(now()) More MySQL examples (version 18+), older versions: calendar:datetime_to_gregorian_seconds(calendar:universal_time())-719528*24*3600. timeIntervalSince1970] (returns double) or NSString *currentTimestamp = timeIntervalSince1970]] ĭouble now = std::chrono::duration_cast(std::chrono::system_clock::now().time_since_epoch()).count() Įpoch := DateTimetoUnix(Now) Tested in Delphi 2010.Įrlang:system_time(seconds). Long epoch = System.currentTimeMillis()/1000 Returns epoch in seconds.ĭ() (.NET Framework 4.6+/.NET Core), older versions: var epoch = (DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalSeconds
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