May 2026 (androidx/androidx): Time Zone Offset Calculation and DST Handling fix focused on correcting offset logic and DST computations. Delivered a dedicated time-offset retrieval method, ensured DST savings reflect historical transitions, and aligned getRawOffset with the offset for the target time. This work improves correctness and reliability of time zone handling across downstream apps that rely on androidx time APIs.

April 2025 monthly summary: Highlights of delivered timezone data updates in ICU and CLDR, aligning with TZDB 2025b to improve accuracy and reliability of timezone handling across products. Key data fixes include America/Coyhaique and Iran transitions, reducing edge-case errors and improving user experiences in scheduling and localization.

January 2025 TZDB 2025a data updates across ICU and CLDR to ensure accurate global timekeeping and consistent zoneinfo data. Completed cross-repo coordination, updated data files, and preserved auditable commit history.

Month: 2024-12 Summary focus: Delivered Android-specific performance optimization for memory-mapped files in ICU (unicode-org/icu). The change extends the Android build path to apply POSIX_MADV_RANDOM-based memory mapping optimization, aiming to reduce memory access latency for ICU resources on Android devices. The work is scoped and non-disruptive to other platforms, with a targeted code change in umapfile.cpp and associated commit.