Installation manual
Installing the OpenVMS VAX Operating System
3.10 Updating Time Zone Information
You can choose from the following options:
• Exit the time zone procedure without setting a TDF
• Set a TDF
• Display the TDF for your local time zone
The following is a sample display:
%UTC-I-UPDTIME, updating Time Zone information in SYS$COMMON:[SYSEXE]
Configuring the Local Time Zone
TIME ZONE SPECIFICATION -- Main Time Zone Menu
1) Australia 11) GMT 21) Mexico 31) Turkey
2) Brazil 12) Greenwich 22) NZ 32) UCT
3) CET 13) Hong Kong 23) NZ-CHAT 33) US
4) Canada 14) Iceland 24) Navajo 34) UTC
5) Chile 15) Iran 25) PRC 35) Universal
6) Cuba 16) Israel 26) Poland 36) W-SU
7) EET 17) Jamaica 27) ROC 37) WET
8) Egypt 18) Japan 28) ROK 38) Zulu
9) Factory 19) Libya 29) Singapore
10) GB-Eire 20) MET 30) SystemV
0) None of the above
Select the number above that best describes your location: 33
You selected US as your time zone.
Is this correct? (Yes/No) [YES]:
US Time Zone Menu
1) Alaska 4) Central 7) Hawaii 10) Mountain
2) Aleutian 5) East-Indiana 8) Indiana-Starke 11) Pacific
3) Arizona 6) Eastern 9) Michigan 12) Samoa
0) None of the above
Select the number above that best describes your location: 6
You selected US/Eastern as your time zone.
Is this correct? (Yes/No) [YES]:
Default Time Differential Factor for standard time is -5:00.
Default Time Differential Factor for daylight saving time is -4:00.
The Time Differential Factor (TDF) is the difference between your
system time and Coordinated Universal Time (UTC). UTC is similar
in most repects to Greenwich Mean Time (GMT).
The TDF is expressed as hours and minutes, and should be entered
in the hh:mm format. TDFs for the Americas will be negative
(-3:00, -4:00, etc.); TDFs for Europe, Africa, Asia and Australia
will be positive (1:00, 2:00, etc.).
Is Daylight Savings time in effect? (Yes/No): yes
Enter the Time Differential Factor [-4:00]:
NEW SYSTEM TIME DIFFERENTIAL FACTOR = -4:00.
Is this correct? [Y]:
For more information about TDF and local time zone support, refer to the
OpenVMS System Manager’s Manual.
Installing the OpenVMS VAX Operating System 3–23