How can he claim that it is the day of ‘Arafah when he is in a country that differs with Makkah with regard to sighting the new moon?

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Check below answers in case you are looking for other related questions:
Is there any virtue in offering du’aa’ on the day of ‘Arafah for those who are not on Hajj?
If countries differ with regard to when Ramadaan begins and when the day of ‘Arafah is, with whom should I fast?

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Related Answers:
Is the du’aa’ of a sinner not answered?
How can a person know whether finding things being made easy for him and having his prayers answered does not come under the heading of being led step-by-step to his ruin?
There is nothing wrong with offering du‘aa’ together after a lecture
Is there any virtue in offering du’aa’ on the day of ‘Arafah for those who are not on Hajj?
If countries differ with regard to when Ramadaan begins and when the day of ‘Arafah is, with whom should I fast?

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