Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

A Comparison of Year 2000 Solutions



G E. Fisher


Not withstanding going out of business, retiring old systems, or replacing inadequate systems with commercial off-the-shelf systems, there are basically three techniques for solving the Year 2000 computer problem: 1) windowing, 2) encoding or encapsulation, and 3) expansion. An overview of these three techniques and variations reveals interesting factors and information that should be taken into consideration when deciding upon a conversion strategy for dealing with correcting the Year 2000 problem. This bulletin presents an overview of these methods and provides a comparison of the pros and cons of each. . While by no means an exhaustive comparison of solutions or characteristics, it shows that there are myriad considerations before the final decision.
A Comparison of Year 2000 Solutions


Julian Day Number, Modified Julian Day Number, Y2K, Y2K solutions, Year 2000 computer problem


Fisher, G. (1998), A Comparison of Year 2000 Solutions, A Comparison of Year 2000 Solutions (Accessed May 27, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created May 1, 1998, Updated February 17, 2017