The Byzantine Clock That Counts from Creation

Field notes

The clock derives several calendar views from the current instant rather than merely formatting a date: its documented payload includes Byzantine year and day-of-year data, Julian and Gregorian fields, year boundaries, and the Constantinopolitan indiction. The machine-readable endpoint is versioned at 1.1.0, exposes a JSON Schema, and accepts a UTC parameter. The page also documents an iframe embed, making the historical clock usable as a small component rather than only a standalone curiosity.