rtc.timezone 
rtc.timezone 

rtc.timezone 

This command specifies the POSIX-compliant time zone string.
This string includes the following:
  • the time zone character specifier
  • the offset from UTC
  • daylight savings time adjustment
  • when to go on and off of daylight savings time (if it pertains to the timezone).

Setvar

To set the POSIX-compliant time zone string:
! U1 setvar "rtc.timezone" "value"
Values
www.iana.org/time-zones This site is updated periodically to reflect changes made by political bodies to time zone boundaries, UTC offsets, and daylight-saving rules.

Getvar

To return the current setting value:
! U1 getvar "rtc.timezone"
Example
If you live in New York in the United States, in the Eastern time zone, your
setvar
string may look like:
! U1 setvar "rtc.timezone" "EST5EDT4,M3.2.0/02:00:00,M11.1.0/02:00:00"
The
"value"
string can be translated as follows:
EST5
(Eastern Standard Time; 5 hours off UTC),
EDT4
(Eastern Daylight Time; 4 hours off UTC), running from 2AM (
/02
; fully qualified:
/02:00:00
) from the second Sunday in March (
M3.2.0/02
) through 2AM (
/02
; fully qualified:
/02:00:00
) on the first Sunday in November (
M11.1.0/02
).
M
indicates the Month follows, followed by the two-digit month, the week (
1
is the first week in which the specified weekday occurs, and
5
indicates the last week of the month with that weekday) and the weekday (
0
is Sunday). The time starts with a slash, and unspecified trailing fields default to zero.
Other examples for locations in the United States:
  • US Central:
    ! U1 setvar "rtc.timezone" "CST6CDT5,M3.2.0/02,M11.1.0/02"
  • US Mountain:
    ! U1 setvar "rtc.timezone" "MST7MDT6,M3.2.0/02,M11.1.0/02"
  • US Pacific:
    ! U1 setvar "rtc.timezone" "PST8PDT7,M3.2.0/02,M11.1.0/02"
  • US Alaska:
    ! U1 setvar "rtc.timezone" "AST9ADT8,M3.2.0/02,M11.1.0/02"
  • US Hawaii:
    ! U1 setvar "rtc.timezone" "HST10"