Date & Time input type and format requirements for visual planning portlets

Our team had some struggles with the planning portlets (scheduler, gannt) not showing any content without any feedback/error. When sending datetimes in as a string in exact this format:

 "StartDt": "2026-03-25T19:00:00",

  "EndDt": "2026-09-30T04:00:00",

Can you confirm this is the correct way for Inputs in the Planning Portlets, and add some information on these requirements to the relevant help sections?

Is the portlet data set to Date & Time?

Otherwise, the format is 2026-04-23T10:00:00 which you appear to have correct.

Can you “date” them with flowscript? (date (yourdate)?

It could be so that it wants it with the Z after the seconds, followed by milliseconds.