Does the new moon appear at the same time around the world or in one region last
If the new moon is measured by moonrise then it's possible that it could land on a different day in different longitudes.   Or, if it's not measured by day, but by astronomical position, it's still possible that it would fall on a different day in different timezones.    180 degrees of longitude should equal roughly a 50% chance of landing on one day before or after (2 days apart isn't possible).

30 degrees of longitude should be roughly 1 chance in 12 of landing on a different day.    More detail is in the possible duplicate question. 

Map of timezones.  While the lines aren't precisely straight, each line should correspond to about 15 degrees longitude.