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6Setting System Time   



This chapter describes how to control system time on OpenVMS systems, describes how system time relates to Coordinated Universal Time (UTC), and tells how to ensure that local system time remains correct when local time changes, as it does for daylight saving time.

For a complete list of support time zones that are referenced by VMS services, see Appendix C in the HP OpenVMS System Manager's Manual, Volume 2: Tuning, Monitoring, and Complex Systems.

Information Provided in This Chapter



This chapter describes the following tasks:

Task System Section
Setting time zone information
OpenVMS Alpha Version 7.3 and later and I64
Setting Time Zone Information on OpenVMS Alpha Version 7.3 and Later and on OpenVMS I64 Systems
Setting time zone information
OpenVMS Alpha before Version 7.3 and OpenVMS VAX
Setting Time Zone Information on OpenVMS VAX Systems
Setting time zone information
OpenVMS Cluster
Setting Time in an OpenVMS Cluster Environment
Controlling daylight saving time conversions
All
Adjusting for Daylight Saving Time
Setting time using the Battery-Backed Watch (BBW)
OpenVMS Alpha and I64
Setting Time Using the Battery-Backed Watch (BBW) (Alpha and I64 Only)
Choosing languages, and date and time formats
OpenVMS
Choosing Languages, and Date and Time Formats
Saving your time customizations
OpenVMS VAX, Alpha, and I64
Saving Your Customization
Using SYSMAN to manage system time
All
Using SYSMAN to Manage System Time

skip links to sections within this chapter.
Setting Correct Time Zone Information on Your System
Setting Time Zone Information on OpenVMS Alpha Version 7.3 and Later and on OpenVMS I64 Systems
Setting Time Zone Information on OpenVMS VAX Systems
Setting Time in an OpenVMS Cluster Environment
Adjusting for Daylight Saving Time
Setting Time Using the Battery-Backed Watch (BBW) (Alpha and I64 Only)
Choosing Languages, and Date and Time Formats
Saving Your Customization
Using SYSMAN to Manage System Time
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