Since the current time is 3:05 AM EDT on Thursday, May 15, 2025, the number of hours until 3:00 PM today is: 3:00 PM is 15:00 in 24-hour format. From 3:05 AM (03:05) to 3:00 PM (15:00) is 11 hours and 55 minutes. So, there are approximately 11 hours and 55 minutes until 3 PM today.