ANNOUNCEMENT

DATA FORMAT CHANGE

A revision will be made October 1, 1999 to the DATE fields on the Universal Data Delivery Format (UDDF) in order to comply with Y2K issues. All numeric, 5-digit date fields (DDDYY) will change to a numeric 7-digit field (DDDYYYY).

    where:
  • DDD is day of year
  • YYYY is year (including century)
    Example:
  • |27499| will now be reported as |2741999|
All UDDF files released on or after October 1, 1999 will be provided in version 1.04 of the UDDF. If you have any questions regarding UDDF changes, contact:

Mark Howard
Aeronautical Data Manager
National Geodetic Survey
1315 East-West Highway
Silver Spring, Maryland 20910
301-713-2685
email:uddf@ngs.noaa.gov