A handy class I use all the time to encapsulate the idea of whether two events coincide. For example, given a time period representing a shift, and a list of time periods representing transactions or sessions or whatever, find which ones are either totally or partially within the time period. This class make it a bit easier.

How Long Has It Been Since a Certain Date?

Date Parse

Compare two dates in Java.

Optimized way to calculate age from timestamp,
the idea is not to use date() call at all if possible.

Simple, but fast implementation of the Naive Sub-String Search Algorithm with my own enhancements written in Delphi.

This function returns a Date object being set at 12 A.M. It is useful for comparing dates where you don't know if they'll come set at the beginning of the day or not.

FormatDateTime Functio