1)   WinDate Calculator 2.5
WinDate Calculator is a flexible utility program that allows you to quickly perform date calculations without having to manually thumb thru a calendar. It can work with any dates between September 14, 1752 and December 31, 3999.
date calculator, date, calculator, systray, system tray, calendar, days, weeks, months, years,

 2)   ESBPCS-Dates for VCL 4.2.2
ESBPCS-Dates is a subset of ESBPCS containing Components and Routines for Calendars and Date/Time Manipulation in Borland Delphi and C++ Builder. Includes Data Aware Components and full source, as well as a good subset of the controls.
Delphi, Components, Data Aware, Edit, Month, Months, dow, day of week, weeks, Tiime zones,