Time zones

Setting a time zone in SR OS allows for times to be displayed in the local time rather instead of UTC. SR OS has both user-defined and system-defined time zones.

A user-defined time zone has a user-assigned name of up to four printable ASCII characters in length and is unique from the system-defined time zones. For user-defined time zones, the offset from UTC is configured as well as any summer time adjustment for the time zone.

SR OS includes multiple commands to control the presentation of times in either UTC or local time zone format. For a CLI session, the environment variable time-display may be set to indicate UTC or local time zone. This setting only affects time strings shown during that specific CLI session. In addition, a global setting of config>system>time>prefer-local-time can be used to control time strings for objects with larger scope that a single CLI session, including the following:

A separate control per log file controls the format of the time strings on the event recorded into the logs (separate from the log filename and header information). Use the config>log>log-id>time-format command to set these time strings.

The SR OS system-defined time zones are listed in Table: System-defined time zones , which includes both time zones with and without summer time correction.

Table: System-defined time zones

Acronym

Time zone name UTC offset

Europe

GMT

Greenwich Mean Time

UTC

BST

British Summer Time

UTC +1

IST

Irish Summer Time

UTC +1*

WET

Western Europe Time

UTC

WEST

Western Europe Summer Time

UTC +1

CET

Central Europe Time

UTC +1

CEST

Central Europe Summer Time

UTC +2

EET

Eastern Europe Time

UTC +2

EEST

Eastern Europe Summer Time

UTC +3

MSK

Moscow Time

UTC +3

MSD

Moscow Summer Time

UTC +4

US and Canada

AST

Atlantic Standard Time

UTC -4

ADT

Atlantic Daylight Time

UTC -3

EST

Eastern Standard Time

UTC -5

EDT

Eastern Daylight Saving Time

UTC -4

ET

Eastern Time

Either as EST or EDT, depending on place and time of year

CST

Central Standard Time

UTC -6

CDT

Central Daylight Saving Time

UTC -5

CT

Central Time

Either as CST or CDT, depending on place and time of year

MST

Mountain Standard Time

UTC -7

MDT

Mountain Daylight Saving Time

UTC -6

MT

Mountain Time

Either as MST or MDT, depending on place and time of year

PST

Pacific Standard Time

UTC -8

PDT

Pacific Daylight Saving Time

UTC -7

PT

Pacific Time

Either as PST or PDT, depending on place and time of year

HST

Hawaiian Standard Time

UTC -10

AKST

Alaska Standard Time

UTC -9

AKDT

Alaska Standard Daylight Saving Time

UTC -8

Australia

AWST

Western Standard Time (such as Perth)

UTC +8

ACST

Central Standard Time (such as Darwin)

UTC +9.5

AEST

Eastern Standard/Summer Time (such as Canberra)

UTC +10