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Managing Timezones, Timekeeping, UTC, and Daylight Savings?

April 26, 2017daylight managing savings Timekeeping Timezones UTC

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Managing Timezones, Timekeeping, UTC, and Daylight Savings?

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You will want to use the command procedure: o SYS$MANAGER:UTC$TIME_SETUP.COM to configure the OpenVMS Timezone Differential Factor (TDF) on OpenVMS V6.0 and later. Select the BOTH option. This configures the OpenVMS TDF settings, though it may or may not configure the TDF and the timezone rules needed or used by other software packages. Please do NOT directly invoke the following command procedures: o SYS$MANAGER:UTC$CONFIGURE_TDF.COM ! do not directly use o SYS$MANAGER:UTC$TIMEZONE_SETUP.COM ! do not directly use TCP/IP Services V5.0 and later use the OpenVMS TDF, UTC, and timezone support. Earlier versions use a TDF mechanism and timezone database that is internal to the TCP/IP Services package. Also on the earlier versions, the TDF must be manually configured within TCP/IP Services, in addition to the OpenVMS configuration of the TDF. DECnet-Plus in V7.3 and later uses the OpenVMS TDF, UTC, and timezone support, and displays its timezone prompts using UTC$TIME_SETUP.COM. Earlier ver