The term "datetime" refers to a data type used in programming and databases to represent specific points in time. It combines both date and time information, allowing for precise tracking of events. For example, a datetime value might include the year, month, day, hour, minute, and second, making it useful for applications that require accurate timekeeping. In many programming languages, such as Python and Java, datetime objects provide various functions to manipulate and format dates and times. This includes operations like adding or subtracting time, comparing dates, and converting between different time zones, which are essential for applications like scheduling and logging.