Usage

1. Select departure city by using mouse (click on the map) or select a predefined city from the pull-down menu. Vertical blue line on the map indicates your departure selection.
2. Press From/To button and select the destination city (indicated by vertical red line).
3. The result shown in the lower right-hand corner tells the sun exposure start time (0h-23h) in your departure time zone clock. This is the time when you should go outside and enjoy bright sunlight for an hour or two in order to reset your body clock. This helps you to adapt into new inner rhythm at new timezone.
4. In order to find the sun exposure time for your return trip, press Direction and read the new result.
5. If you know the airport codes of your departure and destination cities, (e.g. CDG for Paris Charles de Gaulle), you can use different user interface.

More info

• The idea of this programming exercice is based on the deleter manual, which can be found from Art Winfree's home page.
• Author: petterik. This is also the right place for comments on the applet code. Sadly, Art Winfree is no longer among us. His work lives here in code and science.
• The virtual location of this page is here but mostly you are better off by using the actual physical location.
• The source code is here.
• Copying policy and non-warranty.
• Developed and compiled using Sun's JDK version 1.2.2.
• Tested with Netscape Communicator 4.06 and Internet Explorer 4.0.
• Canvas debugging info is enabled by raising the flag DEBUG in the applet parameters.
• Bug: the map is not properly in scale.

How to set up this page

1. Download JetLagDeleter.jar and JetLagDeleter.html and save them to your disk (Netscape users: press SHIFT key and click on the link in order to download it to a file).
2. Make sure that both files are located in the same directory.
3. Point your browser to JetLagDeleter.html - that's all.

Command line usage

% java -jar JetLagDeleter.jar HEL NRT
Recommended sun exposure start time is 02:12 at your departure city time.

Copying policy and non-warranty

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA