How do those who are unable to see the crescent moon fast?

Question:
The questioner says: There are many differences among us in France regarding fasting. Some fast according to the timing of the Kingdom, some according to Algeria, and some according to Morocco. So what should we do, especially since it is difficult to see the crescent moon in France because of rain and clouds?

Answer:
If you have an Islamic center in France, then the center should exercise independent legal reasoning (ijtihad). Those in charge of the center should exercise independent legal reasoning (ijtihad) to determine the beginning of fasting. You fast with them, with the center, if they announce the fast. If the Muslims in France fast, you fast with them. But if there is no center, if there is no center, you fast according to the most reliable country, the most reliable country, the country that fasts based on the sighting of the crescent moon, not based on astronomical calculations. The country that fasts based on the sighting of the crescent moon, fast with them. As for those who fast based on astronomical calculations, no, because the Messenger (peace and blessings be upon him) commanded us to fast upon seeing the crescent moon, and to break the fast upon seeing the crescent moon, or to complete the month as thirty days. So the one who acts in accordance with this is the one who is on the right path. As for the one who acts based on astronomical calculations, that is wrong, not correct. Yes.