Module Link: http://drupal.org/project/date_single_day

• Who: Technical and non-technical users
• What: The date single day module allows you to make date entry easier for dates that will never span more than one day.
• When: Use this module when you want to make it easier for content editors and your date will never go more than one day.
• Where: /sites/all/modules
• Why: This certainly isn't a required module but I would file it under the "nice to have" category.

Theme song "i dunno" by grapes.