some info I stumbled across, around the OP’s topic
**2023-12-01** - Karl Seguin’s zig utils also have some datetime functionality: GitHub - karlseguin/zul: zig utility library
**2023-12-10** - @geemili revived the Proposal: DateTime in std.time.
**2024-01-08** - PR closed https://github.com/ziglang/zig/pull/18272
**2024-04-27** - PR closed: https://github.com/ziglang/zig/pull/19549 (now in a separate repo: GitHub - clickingbuttons/datetime: Generic Date, Time, and DateTime library.)
**2025-10-09** - Zig std.Io now has a Clock enum and a Timestamp struct
**2025-02-10** - I recently noted that epoch.zig in std has some calendric calculations. This was added in 2021, before I even heard about Zig… Forward Free eBooks at Planet eBook.com. I have recently seen this being used in the wild by Zig projects. IMHO both the naming (I’d never expect this in “epoch”) and algorithms could be improved; there are much more efficient ones to convert between civil and serial time, this one for instance.