SSRS – How Report manager shows DATE TIME format in datetime box

Usually Report Manager prompts the date time box using browser language, it doesn't matter how the parameter date displays in the report designer. The reason why you are prompted with a date time format which is not same for some other is because your browser language is not same as other person. To use same date time format in the report manager, the date format in the prompt box displays correctly when you change the browser language. To change the culture of Internet Explorer (IE), you can follow below steps:

1.       Open IE, click Tools->Internet Options.

2.       In the “General” tab, click the button “Language".

3.       Add the required language to the list and move the language to top.