11.1 Introduction
Date and time operations manipulate temporal values (i.e., values related to time). Common date and time operations include retrieving the current date and time from the operating system, extracting the components of a date (e.g., year, month, day) or time (e.g., hour, minute, second), adding to or subtracting from the components of a date or time, comparing one date or time with another date or time, determining whether or not daylight saving time is in effect, determining whether or not it is a leap year, determining the interval between two ...