Starting March 27, 2025, we recommend using android-latest-release instead of aosp-main to build and contribute to AOSP. For more information, see Changes to AOSP.
Time Zone Data
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The Time Zone Data module updates daylight saving time (DST) and time zones on
Android devices, standardizing both the data (which can change frequently in
response to religious, political, and geopolitical reasons) and the update
mechanism across the ecosystem. For more details on Time Zone Data, see
Time Zone Rules.
Changes in Android
Android 10 deprecates the APK-based time zone data update mechanism
(used in Android 8.1 and Android 9) and replaces it with an
APEX-based module update mechanism. AOSP
includes the platform code necessary for APK-based updates, so
devices upgrading to Android 10 can receive partner-provided time zone
data updates through APK. However, the APK update mechanism shouldn't be used on
a production device that is also receiving module updates, as an APK-based
update supersedes an APEX-based update (that is, a device that receives an APK
update ignores APEX-based updates).
The Time Zone Data module is in APEX format and is
available for devices running Android 10 or higher.
| Android release |
APEX |
| Android 15 |
com.google.android.tzdata6 |
| Android 14 |
com.google.android.tzdata5 |
| Android 13 |
com.google.android.tzdata4 |
| Android 12 |
com.google.android.tzdata3 |
| Android 11 |
com.google.android.tzdata2 |
| Android 10 |
com.google.android.tzdata |
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Last updated 2025-06-27 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-06-27 UTC."],[],[],null,["# Time Zone Data\n\nThe Time Zone Data module updates daylight saving time (DST) and time zones on\nAndroid devices, standardizing both the data (which can change frequently in\nresponse to religious, political, and geopolitical reasons) and the update\nmechanism across the ecosystem. For more details on Time Zone Data, see\n[Time Zone Rules](/docs/core/permissions/timezone-rules).\n\nChanges in Android\n------------------\n\nAndroid 10 deprecates the [APK-based time zone data update mechanism](/docs/core/permissions/timezone-rules)\n(used in Android 8.1 and Android 9) and replaces it with an\n[APEX-based module update mechanism](/docs/core/ota/apex). AOSP\nincludes the platform code necessary for APK-based updates, so\ndevices upgrading to Android 10 can receive partner-provided time zone\ndata updates through APK. However, the APK update mechanism shouldn't be used on\na production device that is also receiving module updates, as an APK-based\nupdate supersedes an APEX-based update (that is, a device that receives an APK\nupdate ignores APEX-based updates).\n\nPackage format and dependencies\n-------------------------------\n\nThe Time Zone Data module is in [APEX](/devices/tech/ota/apex) format and is\navailable for devices running Android 10 or higher.\n\n| Android release | APEX |\n|-----------------|------------------------------|\n| Android 15 | `com.google.android.tzdata6` |\n| Android 14 | `com.google.android.tzdata5` |\n| Android 13 | `com.google.android.tzdata4` |\n| Android 12 | `com.google.android.tzdata3` |\n| Android 11 | `com.google.android.tzdata2` |\n| Android 10 | `com.google.android.tzdata` |"]]
