OSCustomizationSpec (New-OSCustomizationSpec, Set-OSCustomizationSpec, etc) does not allow you to select a GMT without DST (UTC) time zone .
The -Timezone option is defined as:
Specifies the name or ID of the time zone for a Windows guest OS only. Using wildcards is supported. The following time zones are available:
000 Int'l Dateline
001 Samoa
002 Hawaii
003 Alaskan
004 Pacific
010 Mountain (U.S. and Canada)
015 U.S. Mountain: Arizona
020 Central (U.S. and Canada)
025 Canada Central
030 Mexico
033 Central America
035 Eastern (U.S. and Canada)
040 U.S. Eastern: Indiana (East)
045 S.A. Pacific
050 Atlantic (Canada)
055 S.A. Western
056 Pacific S.A.
060 Newfoundland
065 E. South America
070 S.A. Eastern
073 Greenland
075 Mid-Atlantic
080 Azores
083 Cape Verde Islands
085 GMT (Greenwich Mean Time)
090 GMT Greenwich
095 Central Europe
100 Central European
105 Romance
110 W. Europe
113 W. Central Africa
115 E. Europe
120 Egypt
125 EET (Helsinki, Riga, Tallinn)
130 EET (Athens, Istanbul, Minsk)
135 Israel: Jerusalem
140 S. Africa: Harare, Pretoria
145 Russian
150 Arab
155 E. Africa
160 Iran
165 Arabian
170 Caucasus Pacific (U.S. and Canada)
175 Afghanistan
180 Russia Yekaterinburg
185 W. Asia
190 India
193 Nepal
195 Central Asia
200 Sri Lanka
201 N. Central Asia
203 Myanmar: Rangoon
205 S.E. Asia
207 N. Asia
210 China
215 Singapore
220 Taipei
225 W. Australia
227 N. Asia East
230 Korea: Seoul
235 Tokyo
240 Sakha Yakutsk
245 A.U.S. Central: Darwin
250 Central Australia
255 A.U.S. Eastern
260 E. Australia
265 Tasmania
270 Vladivostok
275 W. Pacific
280 Central Pacific
285 Fiji
290 New Zealand
300 Tonga
However neither 085 GMT (Greenwich Mean Time) nor 090 GMT Greenwich are actual GMT. They are GMT with DST or Greenwich Standard. So they cannot be used as UTC.
Microsoft also defines 360 as UTC for many applications and I suspect this could be used for this purpose is the PowerCLI & ESXi were updated to support it. However this is not the case as any command including code 360 will result in an error.
Is there a workaround for this? How can I ensure that the client customization on the VM is set to UTC regardless of the original original settings of the VM of which the template was made from?
Thanks in advance.
Best regards,
GVD
