Timezones in international waters

Oscar van Vlijmen ovv at hetnet.nl
Sun Mar 20 11:36:07 UTC 2005

An update to the discussion about timezones at sea, discussed around
2000-01-05 (see tzarchive).
The mentioned date I posted a list, with corrections by Gwillim Law.
Recently I found a more or less official reference:

Bowditch - The American Practical Navigator, Chapter 18 Time, Section 1806
Zone Time; National Imagery And Mapping Agency; 1995.

More information, a table, an algorithm, a web link to Bowditch: see my
Multizones web page:


See also "The International Date Line" at the end of the TZ australasia

Oscar van Vlijmen

More information about the tz mailing list