What date did all religions begin?
Your question may be difficult for some to answer for you
require a direct answer, but simply put it was Adam who offered up
the first prayer (About 7000 years ago) to the same god who
banished him from the Garden of Eden. He was commanded to do so and
so built an alter so that he could come daily and offer up his
prayers to God.
From that time forth men started their own religions but so far
we have no recorded exact dates as to what they became a religion,
though we can assume that some started around or about such and
such a date. Of course we can date modern interpretations of
religions, but pre history gives us little to go on.
ANSWER: c.2900 BCE - Krishna - Hinduism - India
c.2000 BCE - Abraham - Faith in One God (Sabeanism) - Canaan
c.1300 BCE - Moses - Judaism - Egypt
c.650 BCE - Zarathushtra - Zoroastrianism - Persia
563 BCE - Buddha - Buddhism - India
30 CE - Jesus Christ - Christianity - Palestine
621 CE - Muhammad - Islam - Arabia
1863 CE - Bahá'u'lláh - Bahá'i Faith - Persia