Convert string to datetime

Question

How to convert string like  01-01-1970 00 03 44  to datetime

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By using Date parse   you get the unix timestamp  date   new Date  Date parse  quot 05 01 2020 quot       Fri May 01 2020 00 00 00 GMT

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http   www w3schools com jsref jsref parse asp       lt script type  text javascript  gt          var d   Date parse  Jul 8  2005            document write d   lt br gt       lt  script gt

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For this format  supposed datepart has the format dd-mm-yyyy  in plain javascript   x000D   x000D  var dt     01-01-1970 00 03 44  split   -  s   x000D      dat   new Date dt slice 0 3  reverse   join          dt 3    x000D   x000D   x000D

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well  thought I should mention a solution I came across through some trying  Discovered whilst fixing a defect of someone comparing dates as strings   new Date Date parse  01-01-1970 01 03 44

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in Ruby 1 8  the ParseDate module will convert this and many other date time formats   However  it does not deal gracefully with the colon between the year and the hour   Assuming that colon is a typo and is actually a space  then      usr bin ruby1 8  require  parsedate   s    30 Nov 2009 16 29 30  0100  p Time mktime  ParseDate parsedate s          gt   Mon Nov 30 16 29 30 -0700 2009

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You can parse a date time string with a given timezone as well   zone    Pacific Time  US  amp  Canada   ActiveSupport  TimeZone zone  parse  2020-05-24 18 45 00     gt  Sun  24 May 2020 18 45 00 PDT -07 00

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For this format  assuming datepart has the format dd-mm-yyyy  in plain javascript use dateString2Date    Edit  Added an ES6 utility method to parse a date string using a format string parameter  format  to inform the method about the position of date month year in the input string    x000D   x000D  var result   document querySelector   result    x000D   x000D  result textContent    x000D      Fixed ndateString2Date  01-01-2016 00 03 44    n   gt     x000D      dateString2Date  01-01-2016 00 03 44      x000D   x000D  result textContent     x000D      n n With formatting ntryParseDateFromString  01-01-2016 00 03 44    dmy    n   gt     x000D    tryParseDateFromString  01-01-2016 00 03 44    dmy   toUTCString      x000D   x000D  result textContent     x000D      n nWith formatting ntryParseDateFromString  03 01 2016    mdy    n   gt     x000D    tryParseDateFromString  03 01 1943    mdy   toUTCString      x000D   x000D     fixed format dd-mm-yyyy x000D  function dateString2Date dateString    x000D    var dt    dateString split   -  s    x000D    return new Date dt slice 0 3  reverse   join  -           dt 3    x000D    x000D   x000D     multiple formats  e g  yyyy mm dd or mm-dd-yyyy etc   x000D  function tryParseDateFromString dateStringCandidateValue  format    ymd     x000D    if   dateStringCandidateValue    return null    x000D    let mapFormat   format x000D             split     x000D             reduce function  a  b  i    a b    i  return a         x000D    const dateStr2Array   dateStringCandidateValue split      -    g   x000D    const datePart   dateStr2Array slice 0  3   x000D    let datePartFormatted     x000D             datePart mapFormat y   x000D             datePart mapFormat m -1  x000D             datePart mapFormat d     x000D    if  dateStr2Array length  gt  3    x000D        dateStr2Array slice 3  forEach t   gt  datePartFormatted push  t    x000D      x000D       test date validity according to given  format  x000D    const dateTrial   new Date Date UTC apply null  datePartFormatted    x000D    return dateTrial  amp  amp  dateTrial getFullYear       datePartFormatted 0   amp  amp  x000D           dateTrial getMonth       datePartFormatted 1   amp  amp  x000D           dateTrial getDate       datePartFormatted 2  x000D                dateTrial   x000D              null  x000D    x000D   lt pre id  result  gt  lt  pre gt  x000D   x000D   x000D

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Keep it simple with new Date string   This should do it    const s    01-01-1970 00 03 44   const d   new Date s   console log d      --- gt  Thu Jan 01 1970 00 03 44 GMT-0500  Eastern Standard Time   Reference  https   developer mozilla org en-US docs Web JavaScript Reference Global Objects Date  EDIT   quot Code Different quot  left a valuable comment that MDN no longer recommends using Date as a constructor like this due to browser differences  While the code above works fine in Chrome  v87 0 x  and Edge  v87 0 x   it gives an  quot Invalid Date quot  error in Firefox  v84 0 2   One way to work around this is to make sure your string is in the more universal format of YYYY-MM-DD  obligatory xkcd   e g   const s    1970-01-01 00 03 44    which seems to work in the three major browsers  but this doesn t exactly answer the original question

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You could use the moment js library   Then simply   var stringDate    01-01-1970 00 03 44   var momentDateObj   moment stringDate     Checkout their api also  helps with formatting  adding  subtracting  days  months  years  other moment objects    I hope this helps   Rhys

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DateTime strptime allows you to specify the format and convert a String to a DateTime

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I have had success with   require  time  t   Time parse some string

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This will convert the string in date to datetime  if using Rails   quot 05 05 2012 quot  to time  Doc Reference  https   apidock com rails String to time

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formatDateTime sDate FormatType        var lDate   new Date sDate       var month new Array 12       month 0   January       month 1   February       month 2   March       month 3   April       month 4   May       month 5   June       month 6   July       month 7   August       month 8   September       month 9   October       month 10   November       month 11   December        var weekday new Array 7       weekday 0   Sunday       weekday 1   Monday       weekday 2   Tuesday       weekday 3   Wednesday       weekday 4   Thursday       weekday 5   Friday       weekday 6   Saturday        var hh   lDate getHours    lt  10    0             lDate getHours     lDate getHours        var mi   lDate getMinutes    lt  10    0             lDate getMinutes     lDate getMinutes        var ss   lDate getSeconds    lt  10    0             lDate getSeconds     lDate getSeconds         var d   lDate getDate        var dd   d  lt  10    0    d   d      var yyyy   lDate getFullYear        var mon   eval lDate getMonth   1       var mm    mon lt 10  0  mon mon       var monthName month lDate getMonth         var weekdayName weekday lDate getDay          if FormatType  1           return mm     dd     yyyy     hh     mi        else if FormatType  2           return weekdayName      monthName                   dd         yyyy        else if FormatType  3           return mm     dd     yyyy         else if FormatType  4           var dd1   lDate getDate               return dd1  -  Left monthName 3   -  yyyy            else if FormatType  5            return mm     dd     yyyy     hh     mi     ss        else if FormatType    6            return mon         d         yyyy                      hh         mi         ss        else if FormatType    7            return  dd    -    monthName substring 0 3                  -    yyyy         hh         mi         ss

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Shouldn t this also work for Rails   quot 30 Nov 2009 16 29 30  0100 quot  to datetime

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I used Time parse  02 07 1988    like some of the other posters   An interesting gotcha was that Time was loaded by default when I opened up IRB  but Time parse was not defined  I had to require  time  to get it to work   That s with Ruby 2 2

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For chinese Rails developers    DateTime strptime  2012-12-09 00 01 36     Y- m- d  H  M  S     gt  Sun  09 Dec 2012 00 01 36  0000

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https   developer mozilla org docs Web JavaScript Reference Global Objects Date parse  var unixTimeZero   Date parse  01 Jan 1970 00 00 00 GMT    var javaScriptRelease   Date parse  04 Dec 1995 00 12 00 GMT     console log unixTimeZero      expected output  0  console log javaScriptRelease      expected output  818035920000

[javascript] Convert string to datetime

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