Better, faster, stronger time zone updates on Android
 

From the beginning, time zone rules were a component in Mainline, called Time Zone Data or tzdata module. This integration allowed us to react more quickly to government-mandated time zone changes than before. However until 2023 tzdata updates were still bundled with other Mainline changes, sometimes leading to testing complexities and slower deployment.

https://www.osnews.com/story/138774/...es-on-android/