Guardian Telecom
VoIP Telephones
Setup & Configuration
Page 39
Time
Zone
Iden
tifier
A use
r-definable
three or four character time zone
identifier
(such as PST
,
EDT
,
1ST, MUT
,
etc) is needed at the beginning
of the posix time zone str
i
ng to properly set the t
i
me. However
,
the specific
letters
or numbe
r
s used
for
the time zone
identifier
are not
important
and can be any three or four
letter
or number combination that
is
chosen by the user
.
However
,
the time zone
i
dentifier cannot be b
l
ank.
Three or Four Character Time Zone Identifier
PST8PDT,M3.2.0/2:00:00,M11.1.0/2:00:00
Three or four character time zone
identifier
at the
beginning
of the time zone string
.
The identifier can be any three or four letters or number comb
i
nation chosen by the user.
You can also use the
following
URL
when a certa
i
n time zone appl
i
es daylight savings time
:
http://www.timeanddate.com/time/dst
More information about the GMT time in various time zones.
World GMT Table
Time Zone
City or Area Zone Crosses
GMT
-
12
En
i
wetok
GMT
-
11
Samoa
GMT-10
Hawaii
GMT-9
Alaska
GMT
-
8
PS
T,
Pac
ific
US
GMT
-
7
MST
,
Mounta
i
n US
GMT
-6
CST
,
Central US
GMT-5
EST
,
Eastern US
GMT-4
A
tlantic
,
Canada
GMT-3
Brasí
li
a
,
Buenos Ar
i
es
GM
T
-2
Mid-Atlantic
GMT
-
1
Cape Verdes
GMT
Greenwich Mean Time
GMT+1
Ber
lin
,
Rome
GMT+3
Israel
,
Cairo
GMT+4
Ab
u
Dhab
i
,
Muscat
GMT+5
Islamabad, Karachi
GMT+6
Almaty
,
Dhaka
GMT+7
Bangkok
,
Jakarta
GMT+8
Hong Kong
,
Beijing
GMT+9
Tokyo
,
Osaka
GMT+10
Sydney
,
Melbourne
,
Guam
GMT+11
Magadan,
Soloman Is
GMT+12
F
i
ji
,
Wellington
,
Auckland
