Unfortunately pxDatetime has no tooltip configurable option. Buy you can achieve this feature in 2 ways:

Option 1:

<input name="$PpyTempWorkPage$ppyTemplateCalendar" class="inactvDtTmTxt" id="DateTime" style="padding-right: 17px;" type="text" data-ctl="["DatePicker"]" value="" title="test label"/>

This will be the markup generated by pega for pxdatetime, now write a small snippet of JS to add an attribute title to the input tag.Title will automatically take care of providing the tooltip on hover.

 document.getElementById("$PpyTempWorkPage$ppyTemplateCalendar").setAttribute("title", "your tool tip")

Option 2:

Go to pxdate time configurations, go to presentation , -Advanced Presentation Options and add a custom css class for your date time (Cell read-write classes) or Cell read-only classes).

.CustomDateTime and then add the below snippet in your custom css file on the harness.

.CustomDateTime :hover:after {

    content: "Your tooltip";

    display: block;

    position: relative;

    top: -16px;

    right: -16px;

    width: 100px;

 }

You should play around for positioning the tool tip in option 2 anyways. I prefer option 1.

Thanks,

Ashok

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