Hypothetical question: Sabbath/Ramadan in the Artic Circle?

[NotQuiteCockney]

Ok, so if you're Jewish or Muslim in the Artic Circle, how do you keep Ramadan or the Sabbath, particularly at the tricky ends of the year?

Oh god NQC how do you think of these?

Well I believe you can announce Ramadan by hearsay, ie if you haven't actually seen it but your friends down the road have?

So perhaps they can stretch it a bit and phone a friend in another country?

Seen what?

I mean, how do you do the fasting, how do you do the sun-up to sun-down portions of the Sabbath or Ramadan, if you're living somewhere that's in permanent daytime or permanent night?

I was thinking about the moon sighting thing

and I found really good websites for you as well

but it all seems a little pointless now

Is Ramadan a lunar month thing, then?

Well, I'm curious about that bit, too, but also about the timings.

I am being chucked off the pc but will happily warble about this some more tomorrow

or, you could just ask someone who knows what they are talking about

this one is fun

I need to sleep too. The next two weeks will be hectic as hell.

Anyone with answers?

Ok, this thread got mentioned in the Telegraph, which reminded me about it ... but nobody answered it! Anybody know?