Years ago, Benjamin Franklin believed that “early to bed early to rise” was the best practice. When he realized that the sun rose before he did during the spring and summer time of the year he thought it would be beneficial to turn the clocks ahead. That belief could possibly be the beginning of the daylight saving time practice.
The “spring ahead” idea is a controversial practice. Many studies find the time change changes the body's biological clock creating a condition similar to being jet-lagged. The condition can make people less healthy because often times they do not feel like participating in physical activities. However, others believe the extra daylight gives people additional time to participate in physical activities.
The original idea was to utilize the extra daylight to save energy and natural resources by decreasing the use of artificial lighting. Here again, some people believe that the extra daylight and sunshine creates a greater need for air-conditioning, thereby negating the potential energy savings.
Regardless of your thoughts or beliefs, it can cause confusion to the traveler. Not only do you need to consider time zones but also if and when a country or state/territory uses DST. So do your research and try to enjoy the daylight.
And also enjoy St. Paddy's Day today...what ever time you are in!!