Windows Form weird Date time display

Question

I have a form I created awhile ago. Today I noticed a DtaeTime Picker custom formatted field has a weird date time. The control is bound to a datetime field. The Custom format is "MM/dd/yyyy HH:mm tt". It is displaying the date as "08/02/2019 18:13 PM". I believe there is no 18 hour in Regular time format. Don't know how long its been is like this. Could there a property on the control that is causing this reaction. As far as I know this is the only control doing this.  

Answer 1

Hi,

You wrote "MM/dd/yyyy HH:mm tt". 
Capital letter "HH" means 24-hour clock. If you want to show 12-hour clock like "06:13 PM", please write "hh:mm tt". (use lower-case)

Regards,

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Ashidacchi -- http://hokusosha.com

Answer 2

Date/Time gets edited in the BIOS,&/or R.click on the clock by the speaker in task bar,adjust date-time/internet time/edit/update..

The other source,if its a desktop pc,the MB battery has failed,its a 2032 type.Simply power off pc/unplug/remove battery/wait 15 minutes or so,install new,power up pc.On pc start,enter the BIOS,reset date/time,edit for add-on hardware,save & exit.In windows,reset date time.

Answer 3

Hi Seeker of Wisdom,

As Ashidacchi said, you can modify "MM/dd/yyyy HH:mm tt" to "MM/dd/yyyy hh:mm tt".

Here is my code you can refer to.

private void Form1_Load(object sender, EventArgs e)
{
      dateTimePicker1.Format = DateTimePickerFormat.Custom;
      dateTimePicker1.CustomFormat = "MM/dd/yyyy hh:mm tt";
}

Best Regards,

Daniel Zhang

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Answer 4

Thank you, I was not aware of that nuance of the date time format. I don't usually use caps except when it comes to minutes. Weird how one can look at a thing and just not see something like that. Again thank you.