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Date/Time in Number Format

Discussion in 'Information Technology' started by Jay, Jul 28, 2006.

  1. Jay

    Jay
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    Guest

    Thanks in advance.

    A query named Qry_Time_Table has fields such as Date, Start-Time...
    But these are numbers representing dates and times.
    Below are examples.
    (Ex) Date Start_Time
    38889 56001690

    (What I want to achieve)
    Date Start_Time
    6/21/06 6/21/06 09:30:00

    How can I change these numbers into Date/Time format in calculated fields of
    the query or vice versa?
     
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  3. John Vinson

    John Vinson
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    Guest

    On Wed, 21 Jun 2006 18:54:02 -0700, Jay
    <Jay@discussions.microsoft.com> wrote:

    >Thanks in advance.
    >
    >A query named Qry_Time_Table has fields such as Date, Start-Time...
    >But these are numbers representing dates and times.
    >Below are examples.
    >(Ex) Date Start_Time
    > 38889 56001690
    >
    >(What I want to achieve)
    > Date Start_Time
    > 6/21/06 6/21/06 09:30:00
    >
    >How can I change these numbers into Date/Time format in calculated fields of
    >the query or vice versa?


    Is this an Access table, or some external table? What are the
    datatypes of these two fields?

    Access Date/Time values are stored as Double Float numbers, a count of
    days and fractions of a day since midnight, December 30, 1899. 6/21/06
    is in fact 38889, as you can determine using the CDate() function:

    ?cdate(38889)
    6/21/2006

    but I can't see the logic of your Start_time value:

    ?cdbl(#6/21/06 09:30:00#)
    38889.3958333333

    Aha... maybe it's a long integer count of minutes:

    ?DateAdd("n", -56001690, #6/21/06 09:30:00#)
    12/29/1899 8:00:00 AM

    though what the 16 hours differance means is beyond me!

    John W. Vinson[MVP]
     
  4. strive4peace

    strive4peace
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    Guest

    Hi Jay,

    turn on the display of the Properties window

    (right-click anywhere and choose "Properties" from the
    shortcut menu)

    click in your column name

    set the Format property -- m/d/yy hh:nn:ss
    and press ENTER

    this will show you a time based on a 24-hour clock

    when you say this is what you want to archive... a format
    is a way of looking at something; it does not change what is
    stored -- you can change the format property of your
    archive table too.

    Warm Regards,
    Crystal
    Microsoft Access MVP 2006

    *
    Have an awesome day ;)

    remote programming and training
    strive4peace2006 at yahoo.com

    *

    Jay wrote:
    > Thanks in advance.
    >
    > A query named Qry_Time_Table has fields such as Date, Start-Time...
    > But these are numbers representing dates and times.
    > Below are examples.
    > (Ex) Date Start_Time
    > 38889 56001690
    >
    > (What I want to achieve)
    > Date Start_Time
    > 6/21/06 6/21/06 09:30:00
    >
    > How can I change these numbers into Date/Time format in calculated fields of
    > the query or vice versa?
    >
     

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