DateTimeRange is a module for the Orchard CMS 1.4 (http://orchardproject.net/).
It is a Module that adds an extra field that you can use in your content types. The field contains a configurable start - end date/time range or period.
It is developed in C#, ASP.Net MVC and works with Orchard CMS 1.4 or higher.
Configure the field
Use the field
For information on how to use this, check out the documentation