Julian DA Version 1.0.0
Desk Accessory type Julian date Convert Utility for Palm Computing Platform
Date Revised: 02/02/1999,1999033
http://member.nifty.ne.jp/washimi/Palm/Archive/Julian4En.zip
0. Contents
1. What's Julian DA?
Julian DA is a DA type application that handles Julian date, which is used on Mainframes like IBM 9672.
It shows the Julian date equivalent to the Gregorian date entered, or oppositely, shows the Gregorian date equivalent to the Julian date entered.
Julian date represents the number of days accumulated from January 1st to the date.
It defines January 1st as 1, and add 1 per day, then December 31st will be 365 (366 in leap year).
Julian DA can calculate Reciprocal Julian date, which is a reciprocal of Julian date, as well.
This reciprocal defines January 1st as 364, and subtracts 1 per day, so December 31st should be 0.
2. How to Use
Installing Julian DA onto Palm Computing Platform should be done in the same manner as one for a conventional application. A previous version of Julian DA should be deleted prior to the installation if any.
Select Julian DA using DA compatible launcher like DA Launcher, QuickLauncher, LaunchMenu and so on. (Fig.2-1)
When Julian DA is started, Main Window (Fig.2-2) will show up.
Fig.2-1 DA Launcher
Today's date and related Julian date (and its reciprocal) will be displayed there.
Fig.2-2 Main Window
- To display a Julian date equivalent to the Gregorian date entered
- Tap Main Window at Date Display Area.
It will display Date Selection Window (Fig.2-3).
- Select a desired date in Date Selection Window.
Note that the selection must be done between 1980 and 2019. If a year out of range has been selected, this year will be selected.
- Date button
Selects any date then goes back to Main Window.
- Cancel button
Goes back to Main Window without making a selection.
- Today button
Selects Today's date then goes back to Main Window.
- Now the selected date and the related Julian date will be displayed.
Fig.2-3 Date Selection Window
- To display Today's date and the related Julian date
- Tap Main Window at Today Button.
- Today's date and the related Julian date will be displayed.
- To display the Gregorian date related to any Julian date
- Tap Main Window at Julian Date Display Area.
Julian Date Selection Window (Fig.2-4) will be displayed.- Select Julian date (or Reciprocal Julian date) from Julian Date Selection Window.
- Today button
Selects Today's Julian date.
- OK button
Confirms the selected Julian date then goes back to Main Window.
- Cancel button
Cancels the selected Julian date then goes back to Main Window.
- Select Gregorian year in Select Julian Date if needed.
But the selection should be done between 1980 and 2019.
- Selected Julian date and its related Gregorian date are displayed.
Fig.2-4 Julian Date Selection Window
- To quit Julian DA
- Tap Quit button in Main Menu.
Julian DA will quit.
This software has been verified under the following configurations, but it does not guarantee any operation that users intend to do though;
- Palm III (Palm OS 3.0.2)
J-OS III
HackMaster 0.91
App/DA Launcher ver 0.4.3 and LaunchMenu Version 0.9b5
- PalmPilot Professional (Palm OS 2.0.5)
J-OS Pro 2.0b3
HackMaster 0.9
App/DA Launcher ver 0.4.2 and LaunchMenu Version 0.9b5
- Palm OS Emulator 2.1d21 (Palm OS 2.0)
J-OS III
HackMaster 0.9
DA Launcher 3.0
3. User Registration
This package and program are Free Software.
User Registration is not required.
4. Cautions
- The copyright of this package and program is reserved by WASHIMI Ko-ichi of FUTURE NOW.
- This package and program are Free Software.
- The author will take no responsibility on any loss or damage to the data due to this package and program in use or not in use.
- Advanced notification is required if you include this package and program in magazines, books or CD-ROMs.
No modification to the package is permitted.
- Please inform the author before or after you introduce this package and program on your private homepage.
When doing so, please be advised not to add a link directly to the package. Please use the following for the link.
- FUTURE NOW for Palm Computing Platform
http://member.nifty.ne.jp/washimi/Palm/Archive/index.html
You can visit the page above by http://hello.to/fnow/ as well.
- Your comments andrequests are welcome via E-mail to the author, or posting to the mailing list, Pilot-ML, Pilot-Tech-ML (Japanese).
5. Contact
washimi@miffy.club.ne.jp
- Where to get the latest version
http://member.nifty.ne.jp/washimi/Palm/Archive/Julian4En.html
6. Version History
- Version 1.0.0 (02/02/1999,1999033)
- Eliminate the expiration date
- Algorithm tuning
- Version 0.5.2 (12/18/1998,1998352)
- Minor tuning
- Version 0.5.1 (12/15/1998,1998349)
- Minor tuning
- Version 0.5.0 (12/14/1998,1998348)
- Rename daJulian to Julian DA
- Add year selection to Julian Date Selection window
- Set the range of year selection between 1980 and 2019
- Version 0.4.3 (12/12/1998,1998346)
- Minor tuning
- Set the expiration date to 1999/01/31(1999031)
- Version 0.4.2 (12/11/1998,1998345)
- Absorb the difference in display of Gregorian date and Julian date that depends on Palm OS version.
- Version 0.4.1 (12/11/1998,1998345) <not released>
- Improve the window display routine
- Version 0.4.0 (12/10/1998,1998344)
- Add the function to select Gregorian date from Julian date
- Change the document to HTML format
- Version 0.3.2 (12/09/1998,1998343)
- Fix the problem that a correct Gregorian date or Julian date is not displayed on Palm OS 2.0
(Fukaya-san, thank you for the information)
- Version 0.3.1 (12/08/1998,1998342)
- Change the date format to be obtained from Preferences.
- Version 0.3.0 (12/07/1998,1998341)
- Add a functionality to store the selected date
- Change Done button to Quit button
- Version 0.2.0 (12/06/1998,1998340)
- Optimize the layout
- Version 0.1.1 (12/05/1998,1998339)
- Initial release