How to define the time-range for the Time Field in Webform 4.x is it possible to change the selectable time range in a time-field in Webform? I don't want the users to have the choice to select between 00:00 and 23:59. I only want them to choose between 15:00 and 23:00.

Webform validation doesn't work on time fields. Is there any other way?

Thanks in advance.
You can check with Clientside Validation Module. Otherwise you can alter the webform to add validation.

You may refer https://stackoverflow.com/questions/6785882/how-do-i-apply-webform-validation-in-drupal-7 link for a reference.