In this post I will be discussing on Windows Time Zone Utility which is called Tzutil. This utility (Tzutil.exe) is integral part of Windows 10, Windows 11 and all other Windows platform such as Windows Server 2019 / 2022. We can use this small utility to display the current time zone, and to change the time zone.

How to run Tzutil – Get current TimeZone

Open Command prompt as administrator and run the command:

Tzutil /g
tzutil /g

Equivalent PowerShell command for tzutil to display TimeZone is:

Get-TimeZone
Get-TimeZone

As we can see the following information:

Id                         : AUS Eastern Standard Time
DisplayName                : (UTC+10:00) Canberra, Melbourne, Sydney
StandardName             : AUS Eastern Standard Time
DaylightName               : AUS Eastern Daylight Time
BaseUtcOffset              : 10:00:00
SupportsDaylightSavingTime : True

Get list of available TimeZone

To change the time zone we need to find the list of available time zone. For this, run the following command:

Tzutil /l

Equivalent PowerShell command to display list of available Time Zone”:

Get-TimeZone -ListAvailable

This will display list of all time zones / TimeZoneID along with UTC time available globally:

Time Zone NameTimeZoneID
(UTC-12:00) International Date Line WestDateline Standard Time
(UTC-11:00) Coordinated Universal Time-11UTC-11
(UTC-10:00) Aleutian IslandsAleutian Standard Time
(UTC-10:00) HawaiiHawaiian Standard Time
(UTC-09:30) Marquesas IslandsMarquesas Standard Time
(UTC-09:00) AlaskaAlaskan Standard Time
(UTC-09:00) Coordinated Universal Time-09UTC-09
(UTC-08:00) Baja CaliforniaPacific Standard Time (Mexico)
(UTC-08:00) Coordinated Universal Time-08UTC-08
(UTC-08:00) Pacific Time (US & Canada)Pacific Standard Time
(UTC-07:00) ArizonaUS Mountain Standard Time
(UTC-07:00) Chihuahua, La Paz, MazatlanMountain Standard Time (Mexico)
(UTC-07:00) Mountain Time (US & Canada)Mountain Standard Time
(UTC-07:00) YukonYukon Standard Time
(UTC-06:00) Central AmericaCentral America Standard Time
(UTC-06:00) Central Time (US & Canada)Central Standard Time
(UTC-06:00) Easter IslandEaster Island Standard Time
(UTC-06:00) Guadalajara, Mexico City, MonterreyCentral Standard Time (Mexico)
(UTC-06:00) SaskatchewanCanada Central Standard Time
(UTC-05:00) Bogota, Lima, Quito, Rio BrancoSA Pacific Standard Time
(UTC-05:00) ChetumalEastern Standard Time (Mexico)
(UTC-05:00) Eastern Time (US & Canada)Eastern Standard Time
(UTC-05:00) HaitiHaiti Standard Time
(UTC-05:00) HavanaCuba Standard Time
(UTC-05:00) Indiana (East)US Eastern Standard Time
(UTC-05:00) Turks and CaicosTurks And Caicos Standard Time
(UTC-04:00) AsuncionParaguay Standard Time
(UTC-04:00) Atlantic Time (Canada)Atlantic Standard Time
(UTC-04:00) CaracasVenezuela Standard Time
(UTC-04:00) CuiabaCentral Brazilian Standard Time
(UTC-04:00) Georgetown, La Paz, Manaus, San JuanSA Western Standard Time
(UTC-04:00) SantiagoPacific SA Standard Time
(UTC-03:30) NewfoundlandNewfoundland Standard Time
(UTC-03:00) AraguainaTocantins Standard Time
(UTC-03:00) BrasiliaE. South America Standard Time
(UTC-03:00) Cayenne, FortalezaSA Eastern Standard Time
(UTC-03:00) City of Buenos AiresArgentina Standard Time
(UTC-03:00) GreenlandGreenland Standard Time
(UTC-03:00) MontevideoMontevideo Standard Time
(UTC-03:00) Punta ArenasMagallanes Standard Time
(UTC-03:00) Saint Pierre and MiquelonSaint Pierre Standard Time
(UTC-03:00) SalvadorBahia Standard Time
(UTC-02:00) Coordinated Universal Time-02UTC-02
(UTC-01:00) AzoresAzores Standard Time
(UTC-01:00) Cabo Verde Is.Cape Verde Standard Time
(UTC) Coordinated Universal TimeUTC
(UTC+00:00) Dublin, Edinburgh, Lisbon, LondonGMT Standard Time
(UTC+00:00) Monrovia, ReykjavikGreenwich Standard Time
(UTC+00:00) Sao TomeSao Tome Standard Time
(UTC+01:00) CasablancaMorocco Standard Time
(UTC+01:00) Amsterdam, Berlin, Bern, Rome, Stockholm, ViennaW. Europe Standard Time
(UTC+01:00) Belgrade, Bratislava, Budapest, Ljubljana, PragueCentral Europe Standard Time
(UTC+01:00) Brussels, Copenhagen, Madrid, ParisRomance Standard Time
(UTC+01:00) Sarajevo, Skopje, Warsaw, ZagrebCentral European Standard Time
(UTC+01:00) West Central AfricaW. Central Africa Standard Time
(UTC+02:00) AmmanJordan Standard Time
(UTC+02:00) Athens, BucharestGTB Standard Time
(UTC+02:00) BeirutMiddle East Standard Time
(UTC+02:00) CairoEgypt Standard Time
(UTC+02:00) ChisinauE. Europe Standard Time
(UTC+02:00) DamascusSyria Standard Time
(UTC+02:00) Gaza, HebronWest Bank Standard Time
(UTC+02:00) Harare, PretoriaSouth Africa Standard Time
(UTC+02:00) Helsinki, Kyiv, Riga, Sofia, Tallinn, VilniusFLE Standard Time
(UTC+02:00) JerusalemIsrael Standard Time
(UTC+02:00) KaliningradKaliningrad Standard Time
(UTC+02:00) KhartoumSudan Standard Time
(UTC+02:00) TripoliLibya Standard Time
(UTC+02:00) WindhoekNamibia Standard Time
(UTC+03:00) BaghdadArabic Standard Time
(UTC+03:00) IstanbulTurkey Standard Time
(UTC+03:00) Kuwait, RiyadhArab Standard Time
(UTC+03:00) MinskBelarus Standard Time
(UTC+03:00) Moscow, St. PetersburgRussian Standard Time
(UTC+03:00) NairobiE. Africa Standard Time
(UTC+03:30) TehranIran Standard Time
(UTC+04:00) Abu Dhabi, MuscatArabian Standard Time
(UTC+04:00) Astrakhan, UlyanovskAstrakhan Standard Time
(UTC+04:00) BakuAzerbaijan Standard Time
(UTC+04:00) Izhevsk, SamaraRussia Time Zone 3
(UTC+04:00) Port LouisMauritius Standard Time
(UTC+04:00) SaratovSaratov Standard Time
(UTC+04:00) TbilisiGeorgian Standard Time
(UTC+04:00) VolgogradVolgograd Standard Time
(UTC+04:00) YerevanCaucasus Standard Time
(UTC+04:30) KabulAfghanistan Standard Time
(UTC+05:00) Ashgabat, TashkentWest Asia Standard Time
(UTC+05:00) EkaterinburgEkaterinburg Standard Time
(UTC+05:00) Islamabad, KarachiPakistan Standard Time
(UTC+05:00) QyzylordaQyzylorda Standard Time
(UTC+05:30) Chennai, Kolkata, Mumbai, New DelhiIndia Standard Time
(UTC+05:30) Sri JayawardenepuraSri Lanka Standard Time
(UTC+05:45) KathmanduNepal Standard Time
(UTC+06:00) AstanaCentral Asia Standard Time
(UTC+06:00) DhakaBangladesh Standard Time
(UTC+06:00) OmskOmsk Standard Time
(UTC+06:30) Yangon (Rangoon)Myanmar Standard Time
(UTC+07:00) Bangkok, Hanoi, JakartaSE Asia Standard Time
(UTC+07:00) Barnaul, Gorno-AltayskAltai Standard Time
(UTC+07:00) HovdW. Mongolia Standard Time
(UTC+07:00) KrasnoyarskNorth Asia Standard Time
(UTC+07:00) NovosibirskN. Central Asia Standard Time
(UTC+07:00) TomskTomsk Standard Time
(UTC+08:00) Beijing, Chongqing, Hong Kong, UrumqiChina Standard Time
(UTC+08:00) IrkutskNorth Asia East Standard Time
(UTC+08:00) Kuala Lumpur, SingaporeSingapore Standard Time
(UTC+08:00) PerthW. Australia Standard Time
(UTC+08:00) TaipeiTaipei Standard Time
(UTC+08:00) UlaanbaatarUlaanbaatar Standard Time
(UTC+08:45) EuclaAus Central W. Standard Time
(UTC+09:00) ChitaTransbaikal Standard Time
(UTC+09:00) Osaka, Sapporo, TokyoTokyo Standard Time
(UTC+09:00) PyongyangNorth Korea Standard Time
(UTC+09:00) SeoulKorea Standard Time
(UTC+09:00) YakutskYakutsk Standard Time
(UTC+09:30) AdelaideCen. Australia Standard Time
(UTC+09:30) DarwinAUS Central Standard Time
(UTC+10:00) BrisbaneE. Australia Standard Time
(UTC+10:00) Canberra, Melbourne, SydneyAUS Eastern Standard Time
(UTC+10:00) Guam, Port MoresbyWest Pacific Standard Time
(UTC+10:00) HobartTasmania Standard Time
(UTC+10:00) VladivostokVladivostok Standard Time
(UTC+10:30) Lord Howe IslandLord Howe Standard Time
(UTC+11:00) Bougainville IslandBougainville Standard Time
(UTC+11:00) ChokurdakhRussia Time Zone 10
(UTC+11:00) MagadanMagadan Standard Time
(UTC+11:00) Norfolk IslandNorfolk Standard Time
(UTC+11:00) SakhalinSakhalin Standard Time
(UTC+11:00) Solomon Is., New CaledoniaCentral Pacific Standard Time
(UTC+12:00) Anadyr, Petropavlovsk-KamchatskyRussia Time Zone 11
(UTC+12:00) Auckland, WellingtonNew Zealand Standard Time
(UTC+12:00) Coordinated Universal Time+12UTC+12
(UTC+12:00) FijiFiji Standard Time
(UTC+12:45) Chatham IslandsChatham Islands Standard Time
(UTC+13:00) Coordinated Universal Time+13UTC+13
(UTC+13:00) Nuku’alofaTonga Standard Time
(UTC+13:00) SamoaSamoa Standard Time
(UTC+14:00) Kiritimati IslandLine Islands Standard Time

Change the Time Zone

As we list of available Time Zone from above mentioned table, lets change the timezone. We need exact time zone ID to change it. Lets change it to Fiji Standard Time

Change the time zone using cmd prompt:

Tzutil /s “Fiji Standard Time”

Equivalent PowerShell Command:

Set-TimeZone -Name "Fiji Standard Time"

Changing the Time zone using command lines are equivalent to changing it through GUI when we go through Control Panel > Clock and Region, under Date and Time > Set the time and date and selecting Change time zone

Set the time and date

How to turn off DST

If we wanted to disable the Daylight Saving Time, we need to go to Change time zone and uncheck the box Automatically adjust clock for Daylight Saving Time.

Automatically adjust clock for Daylight Saving Time

But if this needs to be automated for lots of devices using Configuration Manager or Intune, we can use following command line:

Tzutil /s "AUS Eastern Standard Time_dstoff"

Conclusion

In a nut shell we did following:
To get current Time Zone ID: tzutil /g
To get list of all available Time Zone ID’s: tzutil /l
To apply new Time Zone: tzutil /s TimeZoneID[_dstoff]

Few of us might be wondering what is the use case for changing the Time zone using command line. One of the most important use case I can share with you. If a government of Fiji or Samoa (which has happened in the past) announced delaying of Daylight saving time or totally getting eliminating the Day light saving time. This will not be implemented on Windows devices until unless Microsoft releases a patch. Hence, users will start complaining about change in time (1 hour less or more). Hence, we need to uncheck the box Automatically adjust clock for Daylight Saving Time. And to automate it for big organization, we can deploy it through SCCM by using tzutil /s TimeZoneID_dstoff.

Also, we can change the default time zone into a wim / by running the command:

Dism /Image:”c:\mount\windows” /Set-TimeZone:”AUS Eastern Standard Time”

You need to mount, make changes and then unmount the image.

Reference Links

Tzutil | Microsoft Docs

Time Zones – Microsoft Advertising | Microsoft Docs