[Windflier]

The Greeks were highly religious and very progressive. They hadn't invented printing yet, so the calendars of the day were very prone to error.

Civilizations older than the ancient Greeks had the ability to track days, months, and years with precision, and they didn't have paper, either.

The ancient Greeks had a phenomenal level of skill with the science of mathematics, as evidenced by their many monuments and public buildings (the Parthenon, for example). I highly doubt that the simple technology of tracking the movement of the sun, moon, and stars was outside their grasp.

[muawiyah]

It's not enough that ancient civilizations had stone calendars ~ can you imagine hauling around one like the Mayan's used around in a trireme on a visit to another friendly city-state.

Like that'd be the original anchor!

This was a PORTABLE BULLETIN BOARD that addressed all the issues regarding setting the date for the Olympics.