1. Global Deployment Guide
  2. Modifying Time Zones

Modifying Time Zones

You will rarely need to modify a time zone’s regional settings. However, you might want to modify other time zone settings such as the display name or daylight savings time rules, as these occasionally change.

Daylight savings time rules are defined in detail records for applicable time zone records. Multiple detail records can be defined for any time zone. Rules to accommodate changes that took effect in 2007 are defined for U.S. time zones subject to daylight savings time. (Various alerts on My Oracle Support describe DST issues and resolutions for previous Siebel CRM releases.)

Creating and using new time zone records is not supported.

To modify time zone settings

  1. Navigate to the Administration - Data screen, then the Time Zone Administration view.

  2. In the Time Zones list, select the time zone record that you want to modify.

  3. Modify time zone fields as necessary. Fields are described in the following table.

    Field Description

    Name

    Full name of time zone.

    Note: For UTC deployments, you specify the full name of the applicable time zone as the value for the Default Time Zone system preference. For more information, see About UTC System Preferences.

    Active

    Specifies whether a time zone record is considered active (that is, when Active equals True).

    Standard Abbreviation

    The abbreviation for the time zone.

    DST Abbreviation

    The abbreviation for daylight savings time for the time zone.

  4. In the Details list, modify daylight savings time rule settings as necessary, or create a new rule. (There is no New button, but you can create a new rule using Ctrl+N. Alternatively, you can copy an existing rule and modify the copy.) Fields are described in the following table.

    Field Description

    Start Date

    The date when a time zone rule is to take effect, such as 01/01/2021.

    UTC Offset

    The time difference in minutes between local time and UTC.

    For example, the (U.S.) Eastern Standard Time has a UTC offset of minus 300 minutes (GMT minus 5). Offsets are not necessarily in increments of hours (that is, divisible by 60). For example, Adelaide (Australia) has a UTC offset of 570 minutes (GMT plus 9:30), or 9.5 hours.

    DST Bias

    The difference in time, in minutes, DST makes (where applicable).

    For example, the (U.S.) Eastern Standard Time (GMT minus 5) has a DST bias of 60.

    DST Start Ordinal

    Part of the rule that determines when DST starts. For example, if the rule is the first Sunday in April, then First is defined in this field.

    DST Start Day

    Part of the rule that determines when DST starts. For example, if the rule is the first Sunday in April, then Sunday is defined in this field.

    DST Start Month

    Part of the rule that determines when DST starts. For example, if the rule is the first Sunday in April, then April is defined in this field.

    DST Start Time

    Start time for DST, measured in minutes into the day when DST starts. For example, 2 a.m., a common DST start time, is equivalent to 120 minutes.

    DST End Ordinal

    Part of the rule that determines when DST ends. For example, if the rule is the last Sunday in October, then Last is defined in this field.

    DST End Day

    Part of the rule that determines when DST ends.

    DST End Month

    Part of the rule that determines when DST ends.

    DST End Time

    End time for DST, measured in minutes into the day when DST ends.

  5. After updating time zone settings, you must restart the Siebel Server.

    For more information about restarting the Siebel Server, see Siebel System Administration Guide.