Where do the launch schedules come from?
The board uses Launch Library 2 by The Space Devs and shows up to 12 upcoming or recent missions, with a 15-minute server cache. It is not an exhaustive list of every launch worldwide. Countdown timers require minute or second schedule precision; launch dates, statuses and webcast links may change. Confirm important plans with the launch provider.
Launch Library 2 documentation · Kaveri Orbital: equations, assumptions and limits