when do Muslims know when to start and stop fasting
Christians do not have a fasting month, only Muslims do.
shadan
it affects muslims because it shows them how they will end up, it shows them how they should act nowadays. :)
Ramadhan
The holy month of Fasting on the Islamic calender is called "Ramadan"
hajj,zakat,fasting,salat,shahada Because they are the actions we Muslims must perform. Also because intentionally not believing in any one of them takes a person outside of Islam.
from the age of puberty.
doing fasting
Ramadan. The five pillars (for Sunni Muslims) include fasting, and Ramadan is the time of fasting. Shia Muslims have fasting as one of their practices rather than a pillar of faith.
Muslims stop fasting when they can see the new moon that is the first day of next Islamic calendar month.
During the month of Ramadan fasting is compulsary for every adult muslim.