Does sighting of the moon applies to only Ramadhaan and the Eid occasions?

Answer

Sighting of the moon pertains to sighting it only after sunset at the end of the 29th day of the Islamic month. Sighting during the daytime has no relevance in the determination of the Islamic months. Sighting of the moon applies to all the months. If at the end of the 29th day of the Islamic the moon is not sighted nor is there reliable information of a sighting from another place, then the month will have 30 days. After the 30th day, will begin the new month even if the moon is not seen at the end of the 30th day. An Islamic month never has 31 days.