Is there a way to change the URL form en-GB to en-US so the dateTime picker shows MM/DD/YY?
So, my browser and OS are both configured to en-US. Do yo know idea there is any other place where the en-GB could be coming from?
Splunk detects your browser's locale, so you may want to make sure it (and your OS) are set to en_US.
The language and locale docs page may be helpful: https://docs.splunk.com/Documentation/Splunk/6.5.0/Admin/Userlanguageandlocale