What happens if the moon cannot be sighted?
If the first crescent is not visible in the Holy Land on the appropriate day at even, lets say the 29th day, we look on the following day. However, by default a month cannot exceed 30 days. So if the new crescent is not visible the coming in of the 30th day, the next day is pronounced the beginning of the new month automatically. It should be noted that although we in the Western Hemisphere will look to confirm the findings, our law requires that we look to Jerusalem for our direction in following the Torah.