Answer:
To determine the time at 45°E longitude, we need to know the time zone that this longitude falls under. There are several time zones that are at or near 45°E longitude, including:
Moscow Time (UTC+3)
Arabia Standard Time (UTC+3)
East Africa Time (UTC+3)
Since we don't have any information on the specific time zone in question, we can't give a definitive answer. However, we do know that Bhutan is in the time zone UTC+6, which is 6 hours ahead of Coordinated Universal Time (UTC). Therefore, when it is 10am in Bhutan (UTC+6), it would be:
4am in Moscow (UTC+3)
4am in Arabia (UTC+3)
4am in East Africa (UTC+3)
Note that if the longitude in question falls under a different time zone, the time difference would be different.