i know history,hindis has nothig to do with hinduism first learn that. Hinduism abt free souls and free thought , not bind by some book or prophets..a free soul is a hindu.
ther is no calendar, LOL chk hindu calendar system google it out, there are several kinda o fhindu calendars , the one we use vikramsamvat.
it is you , who need to read the hisotry, who turned the great civilization in to war zone with the concept of dar-ul_hurb.
ther eis no islmc science, all the science muslims copied from greece and indians is called islamic science..LOL..
go look at ruins of Harappa or Mohanjadaro, read vedas, wihte their origins in unkonwtime..
as a muslim you are taught to believe before Islam your people were living like animlas and no civilizations, ever read abt great persia before muslim invasion..LOL now you know why enlightened Iranins hate Isalm..
Islam turns any civiliszation in to stone age, look afghanistan,pakistan,bangla,sudan,saudia...reform now or face war