Get epoch for a specific date using Javascript

Question

How do I convert 07 26 2010 to a UNIX timestamp using Javascript

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You can also use Date now   function

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Some answers does not explain the side effects of variations in the timezone for JavaScript Date object   So you should consider this answer if this is a concern for you   Method 1  Machine s timezone dependent  By default  JavaScript returns a Date considering the machine s timezone  so getTime   result varies from computer to computer   You can check this behavior running   new Date 1970  0  1  0  0  0  0  getTime          Since 1970-01-01 is Epoch  you may expect ZERO        but in fact the result varies based on computer s timezone   This is not a problem if you really want the time since Epoch considering your timezone   So if you want to get time since Epoch for the current Date or even a specified Date based on the computer s timezone  you re free to continue using this method      Seconds since Epoch  Unix timestamp format   new Date   getTime     1000                local Date Time since Epoch in seconds new Date 2020  11  1  getTime     1000     time since Epoch to 2020-12-01 00 00  local timezone  in seconds     Milliseconds since Epoch  used by some systems  eg  JavaScript itself   new Date   getTime                         local Date Time since Epoch in milliseconds new Date 2020   0  2  getTime              time since Epoch to 2020-01-02 00 00  local timezone  in milliseconds       Warning    notice that MONTHS in JavaScript Dates starts in zero  0   January  11   December      Method 2  Machine s timezone independent  However  if you want to get ride of variations in timezone and get time since Epoch for a specified Date in UTC  that is  timezone independent   you need to use Date UTC method or shift the date from your timezone to UTC   Date UTC 1970   0  1         should be ZERO in any computer  since it is ZERO the difference from Epoch         Alternatively  if  for some reason  you do not want Date UTC      const timezone diff   new Date 1970  0  1  getTime       difference in milliseconds between your timezone and UTC      new Date 1970   0  1  getTime   - timezone diff         should be ZERO in any computer  since it is ZERO the difference from Epoch   So  using this method  or  alternatively  subtracting the difference   the result should be      Seconds since Epoch  Unix timestamp format   Date UTC 2020   0  1    1000     time since Epoch to 2020-01-01 00 00 UTC in seconds         Alternatively  if  for some reason  you do not want Date UTC      const timezone diff   new Date 1970  0  1  getTime        new Date 2020   0  1  getTime   - timezone diff    1000     time since Epoch to 2020-01-01 00 00 UTC in seconds      new Date 2020  11  1  getTime   - timezone diff    1000     time since Epoch to 2020-12-01 00 00 UTC in seconds     Milliseconds since Epoch  used by some systems  eg  JavaScript itself   Date UTC 2020   0  2       time since Epoch to 2020-01-02 00 00 UTC in milliseconds         Alternatively  if  for some reason  you do not want Date UTC      const timezone diff   new Date 1970  0  1  getTime        new Date 2020   0  2  getTime   - timezone diff             time since Epoch to 2020-01-02 00 00 UTC in milliseconds       Warning    notice that MONTHS in JavaScript Dates starts in zero  0   January  11   December    IMO  unless you know what you re doing  see note above   you should prefer Method 2  since it is machine independent     End note  Although the recomendations in this answer  and since Date UTC does not work without a specified date time  you may be inclined in using the alternative approach and doing something like this   const timezone diff   new Date 1970  0  1  getTime    new Date   getTime   - timezone diff       lt --     new Date   without arguments        means  local Date Time subtracted by timezone since Epoch        This does not make any sense and it is probably WRONG  you are modifying the date    Be aware of not doing this   If you want to get time since Epoch from the current date AND TIME  you are most probably OK using Method 1

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new Date  2016-3-17   valueOf      will return a long epoch

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Date parse   method parses a string representation of a date  and returns the number of milliseconds since January 1  1970  00 00 00 UTC   const unixTimeZero   Date parse  01 Jan 1970 00 00 00 GMT    const javaScriptRelease   Date parse  04 Dec 1995 00 12 00 GMT     console log unixTimeZero      expected output  0  console log javaScriptRelease      expected output  818035920000   Explore more at  Date parse

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Take a look at http   www w3schools com jsref jsref obj date asp  There is a function UTC   that returns the milliseconds from the unix epoch

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You can create a Date object  and call getTime on it   new Date 2010  6  26  getTime     1000

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Number new Date 2010  6  26     Works the same way as things above  If you need seconds don t forget to   1000

[javascript] Get epoch for a specific date using Javascript

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