
Operations Guide 930796L CyberData Corporation
Installing the VoIP Outdoor Intercom
Intercom Setup
32
2.4.5.1 Time Zone Strings
The posix time zone string tells the internal date and time utilities how to handle daylight savings
time for different time zones. Tabl e 2-8 shows some common strings.
Time Zone Time Zone String
US Pacific time PST8PDT,M3.2.0/2:00:00,M11.1.0/2:00:00
US Mountain time MST7MDT,M3.2.0/2:00:00,M11.1.0/2:00:00
US Eastern Time EST5EDT,M3.2.0/2:00:00,M11.1.0/2:00:00
Phoenix Arizona
a
MST7
US Central Time CST6DST,M3.2.0/2:00:00,M11.1.0/2:00:00
Ta bl e 2-9 shows a breakdown of the parts that constitute the following time zone string:
● CST6DST,M3.2.0/2:00:00,M11.1.0/2:00:00
Time Zone String
Part
Meaning
CST6CDT The time zone offset from GMT and three character identifiers for the time zone.
CST Central Standard Time
6 The (hour) offset from GMT/UTC
CDT
Central Daylight Time
M3.2.0/2:00:00 The date and time when daylight savings begins.
M3 The third month (March)
.2 The 2nd occurrence of the day (next item) in the month
.0 Sunday
/2:00:00
Time of day to change
M11.1.0/2:00:00 The date and time when daylight savings ends.
M11 The eleventh month (November)
.1 The 1st occurrence of the day (ne
xt item) in the month
.0 Sunday
/2:00:00 Time of day to change
Table 2-8. Common Time Zone Strings
a.Phoenix, Arizona does not use daylight savings time.
Table 2-9. Time Zone String Parts
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