Thank you for adding the option for setting dates for open/close of a new chat room in the Chat tool! This is a nice new feature and much appreciated.
I noticed that the date selection tool is the older date chooser. In updated tools like Announcements, Assignments, etc. there is a new date picker with a modern color scheme, etc. I recommend for consistency from tool to tool to change the date picker to the same tool. The date picker can be selected so that only the date (not the date and time) are available. Given some threads I noticed on the dev list, I believe the new date selection tool was chosen to help with internationalization issues. If the goal is to prevent direct user input to minimize errors, make it more mobile friendly, and avoid internationalization problems, then consistency for these reasons would be helpful, too.
Thank you for considering this feature request to standardize UI elements across tools within Sakai.