DongClock Refuses to Pretend HTTP Time Is Exact

Why it surfaced

DongClock’s unusual selling point is restraint: it explains that HTTP Date is usually only second-granular and that one response cannot reveal one-way network delay. It filters suspicious samples, slows down after errors, and starts measuring again after a long interruption instead of carrying old confidence forward.

A Windows tool that estimates a website’s server time from HTTP Date responses, network round trips, and repeated samples.