What is the difference between "Standard" and "Daylight" abbreviations?
Quick Answer: Standard abbreviations represent the regular time zone without daylight saving, while daylight abbreviations indicate the time zone when clocks are set forward, usually by one hour, during daylight saving time.
Time zones often have two abbreviations: one for Standard Time and one for Daylight Time. For example, EST stands for Eastern Standard Time, used in the winter months, and EDT is Eastern Daylight Time, used when clocks move forward in spring.
Daylight abbreviations show that the clock is shifted ahead to extend evening daylight. This helps you know if the time reflects the usual offset or the daylight saving adjustment.