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DateObject granularity coversion


DateList coupled with String OperationsGraphics in Notebook Different from Graphics Expression?Convert a string into a list of numbersDelete rows based on specific periodsConvert DateObject into TimeObjectDate Conversion Using Regular Expressions on “Incomplete” Date FormatsTimelinePlot - Handling dates prior to Year ZeroSet hour of DateObjectSuppressing DateString default behavior when parts of date are missing






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








3












$begingroup$


Is there a way to convert the DateObject whose FullForm is:



date1 = DateObject[List[2019,9,14,0,0,0],"Instant","Gregorian",-7.`]


into the following DateObject:



date2 = DateObject[List[2019,9,14],"Day","Gregorian",-7.`]


My list has DateObjects with "Instant" granularity, but I need to use Cases to pick out elements from the same day. I seem to have missed in the documentation how to do this... Thanks for any advice.










share|improve this question











$endgroup$




















    3












    $begingroup$


    Is there a way to convert the DateObject whose FullForm is:



    date1 = DateObject[List[2019,9,14,0,0,0],"Instant","Gregorian",-7.`]


    into the following DateObject:



    date2 = DateObject[List[2019,9,14],"Day","Gregorian",-7.`]


    My list has DateObjects with "Instant" granularity, but I need to use Cases to pick out elements from the same day. I seem to have missed in the documentation how to do this... Thanks for any advice.










    share|improve this question











    $endgroup$
















      3












      3








      3





      $begingroup$


      Is there a way to convert the DateObject whose FullForm is:



      date1 = DateObject[List[2019,9,14,0,0,0],"Instant","Gregorian",-7.`]


      into the following DateObject:



      date2 = DateObject[List[2019,9,14],"Day","Gregorian",-7.`]


      My list has DateObjects with "Instant" granularity, but I need to use Cases to pick out elements from the same day. I seem to have missed in the documentation how to do this... Thanks for any advice.










      share|improve this question











      $endgroup$




      Is there a way to convert the DateObject whose FullForm is:



      date1 = DateObject[List[2019,9,14,0,0,0],"Instant","Gregorian",-7.`]


      into the following DateObject:



      date2 = DateObject[List[2019,9,14],"Day","Gregorian",-7.`]


      My list has DateObjects with "Instant" granularity, but I need to use Cases to pick out elements from the same day. I seem to have missed in the documentation how to do this... Thanks for any advice.







      date-and-time conversion






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 8 hours ago









      Alexey Popkov

      39.9k4 gold badges113 silver badges274 bronze badges




      39.9k4 gold badges113 silver badges274 bronze badges










      asked 9 hours ago









      Suite401Suite401

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      1,1574 silver badges12 bronze badges























          1 Answer
          1






          active

          oldest

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          4














          $begingroup$

          DateObject itself can be used for this:



          date1 // FullForm



          DateObject[List[2019,9,14,0,0,0],"Instant","Gregorian",-7.`]




          DateObject[date1, "Day"] // FullForm



          DateObject[List[2019,9,14],"Day","Gregorian",-7.`]







          share|improve this answer









          $endgroup$

















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            1 Answer
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            active

            oldest

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            $begingroup$

            DateObject itself can be used for this:



            date1 // FullForm



            DateObject[List[2019,9,14,0,0,0],"Instant","Gregorian",-7.`]




            DateObject[date1, "Day"] // FullForm



            DateObject[List[2019,9,14],"Day","Gregorian",-7.`]







            share|improve this answer









            $endgroup$



















              4














              $begingroup$

              DateObject itself can be used for this:



              date1 // FullForm



              DateObject[List[2019,9,14,0,0,0],"Instant","Gregorian",-7.`]




              DateObject[date1, "Day"] // FullForm



              DateObject[List[2019,9,14],"Day","Gregorian",-7.`]







              share|improve this answer









              $endgroup$

















                4














                4










                4







                $begingroup$

                DateObject itself can be used for this:



                date1 // FullForm



                DateObject[List[2019,9,14,0,0,0],"Instant","Gregorian",-7.`]




                DateObject[date1, "Day"] // FullForm



                DateObject[List[2019,9,14],"Day","Gregorian",-7.`]







                share|improve this answer









                $endgroup$



                DateObject itself can be used for this:



                date1 // FullForm



                DateObject[List[2019,9,14,0,0,0],"Instant","Gregorian",-7.`]




                DateObject[date1, "Day"] // FullForm



                DateObject[List[2019,9,14],"Day","Gregorian",-7.`]








                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 8 hours ago









                C. E.C. E.

                55.3k3 gold badges107 silver badges219 bronze badges




                55.3k3 gold badges107 silver badges219 bronze badges































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