What day should we observe "karva chauth" in the USA?

Question

There is a lot of confusion about when to celebrate the Indian custom of Karva Chauth in the USA this year. In India, people say it's on the 10th of October, 2006. And for most occasions, that would mean we would celebrate it a day later here in the USA, when it is the 10th of October here (10th Oct occurs later here by about half a day). Anyways, the problem/confusion about Karva Chauth is that it's not based on a date... it's based on the phase of the moon. So I guess it's possible that to be 4 days off from the full-moon in the USA might not be exactly the same as it is in India. So some people are saying the customs should be observed on the 9th in the USA and others are saying we should stick to the 10th.

Answer 1

Don't know, but what happens if the moon doesn't show due to rain/clouds for several days? Does a woman die of thirst?
Why would someone worship the moon anyway?
If a woman wants her husband to be successful, fast and pray. But once you worship the moon, you blow the whole thing. Worship is for God only.

Answer 2

we shouldn't observe it in the USA. It should be observed in India.