Curated articles on Unix timestamps, UTC, the Year 2038 problem, timezone changes, and the IANA timezone database.
PostgreSQL security updates fix CVE-2026-6474, a core-server flaw that could disclose portions of memory when the historical timeofday() function processes crafted timezone zones.
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Ubuntu 26.04 LTS now uses chrony as the default time daemon for new installs, replacing systemd-timesyncd and enabling Network Time Security against Ubuntu time servers by default.
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Microsoft's May 2026 Windows client and server updates include support for Egypt's restored daylight-saving rule, a reminder that local-time correctness depends on downstream OS timezone data as well as IANA releases.
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Canadian Apple users reported an over-the-air time zone definitions prompt, showing how provincial clock-rule changes move from tzdata into phones, Macs, calendars, and local-time displays.
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Alberta's Bill 31 received Royal Assent with an Official Time Act section that would set the province to UTC-6 year-round when proclaimed, giving schedulers and tzdata consumers another Western Canada rule change to track.
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The U.S. House Energy and Commerce Committee moved Sunshine Protection Act language into a broader transportation bill, giving permanent daylight saving time its clearest House path since the 2022 Senate vote.
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The active IETF NTPv5 draft separates UTC, TAI, UT1, and leap-smeared UTC in the protocol, while keeping NTP era handling visible ahead of the 2036 network-time rollover.
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Node.js 26 turns on JavaScript Temporal by default, giving server-side code a built-in path for exact instants, wall-clock dates, and timezone-aware date-time work beyond legacy Date.
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IANA's March 2026 tzdata and tzcode release corrected Moldova's clock rules and changed the default build so leap-second-aware "right" TZif files are no longer installed automatically.
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British Columbia moved to permanent UTC-7 after its March 2026 spring-forward, and IANA tzdata 2026b now carries the rule that prevents most of the province from falling back in November.
Read more →After nine years of design work, the TC39 Temporal proposal reached Stage 4 in early 2025. Firefox 139 became the first major browser to ship Temporal enabled by default in May 2025, with Chrome and Safari implementations following.
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Debian "Trixie" (Debian 13), expected mid-2025, made 64-bit time_t the default for all remaining 32-bit architectures, closing the last major Linux distribution gap ahead of the January 2038 Unix overflow deadline.
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The US Senate unanimously passed the Sunshine Protection Act in 2022, yet clocks still change twice a year. A look at where the federal bill stands, which states have already acted, what Trump said in December 2024, and why sleep scientists are urging the opposite of what Congress is proposing.
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The 2024 and 2025 tzdata releases brought significant changes: Kazakhstan unified all regions on UTC+5, Paraguay adopted a permanent -03 offset ending DST, and Chile created a new timezone for its Aysén region.
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A 2024 Nature study found that accelerated glacial melt is slightly speeding up Earth's rotation, pushing back the predicted arrival of a negative leap second -- an event that has never occurred and that network engineers have long dreaded.
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The ITU-R World Radiocommunication Conference 2023 (WRC-23), held in Dubai, formally adopted a resolution endorsing the BIPM's 2022 vote to eliminate leap seconds from UTC by 2035, aligning international telecom standards with the metrology decision.
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The Internet Assigned Numbers Authority published tzdata 2023a, 2023b, and 2023c throughout the year, covering rule changes in Egypt, Greenland, and several Pacific Island nations -- a reminder that political decisions can break software overnight.
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The International Bureau of Weights and Measures (BIPM) voted in November 2022 to eliminate the leap second by 2035, ending five decades of an irregular timekeeping practice that has caused crashes at Reddit, Cloudflare, and countless other systems.
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The Linux 5.6 kernel, released March 2020, completed a multi-year effort to make the kernel's internal timekeeping 64-bit clean on 32-bit architectures -- a foundational fix for the Year 2038 problem that still affects embedded Linux devices worldwide.
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