I need more Astronomical Data

[londubh]

Just dating back about... 16 centuries?

It occurred to me last night that, if the legends are correct, I can determine the exact year that Patrick started the conversion of Ireland.

See, the story goes that when Patrick lit the paschal fire on holy Saturday, it created quite an uproar because he lit it before the king lit his bealtaine fire.

Given

Comments

[caprine]

There are geeks, and then there are geeks. You, sir, are a geek. Congratulations!

Where to find the astronomical data for 16 centuries ago

[watery_memories]

Ask an autistic savant? Theoretically, one should be able to calculate it, yes? It's just a really, really, really difficult/tedious calculation. So just find an autistic savant who can do that calculation in their head and ask them! Simple as pie! :)

[lauryious]

After a bit of digging, found a few more tools to maybe help narrow it down.

* High-king Loigaire (reigned 428-467) ruled during the event
* The First Council of Nicaea (325) established the date of Easter as the first Sunday after the full moon (the Paschal Full Moon) following the northern hemisphere's vernal equinox.
* Good moon phases program http://www.paulcarlisle.net/mooncalendar/

After doing some rough math, going over a few years, April 445 (first sat of April is full moon) looks to be the most promising. Either way a very interesting puzzle to think on. Thank you!