Hello, I'm new to this forum and i would like to inquire first if u re a miuslim? if yes u should nt b askin this questn.

To ur questn;

The moon and the star used as symbols on mosques that makes it seem so important is nothing but to the virtue of the fact that counting of days in Islam is done with the aid of the moon makes the moon so important and was adopted some unknown years back as design, it isnt traced back to the prophet of Allah, Muhamad (saw). so don't get confused u testify too that the muslims worship Allah(God) Alone and him alone.
And do u know that using the moon for countin of days is Best for the world of faithfuls(i mean muslims, christians nd jews) in general the way muslims do? if they truly believe in God solely because the months we use today werent decreed by God nd also nt used by the prophets they claim to believe in so why the deceit? moreover they re the names of Idols of the then roman empire nd were adopted by then Christains nd nw putin the world in loss.

reply two;
i don't know wy ur friend said it isnt neccessary he cud rather hv used compulsory.
i ll write the meanins of the wordings for u;

"Allah(God) is the greatest x2
I testify that there is no other God other than Allah(God) x2
I testify that muhammed(saw) is the messenger of Allah(God) x2
hasten to Prayer x2
hasten to Success x2
Allah(God) is the greatest x2
there is no other God other than Allah(God)
"
thats the meaning it is used to remind people for prayer hw then do they not need it through loudspeaker
u might need to know the reason why it was started by the prophet of God (Muhammad [saw]). later.

OLAADEGBU shd read this too, pls someone one shd inform him