That is lost in history. The Catholic Encyclopedia of 1912 mentions that the Feast of the Assumption on 15 August was one of the principal feasts in Rome as of A.D. 700 and that it has always been a "Double of the First Class" (the old ranking of feasts - this was the highest possible rank) and always a Holy Day of Obligation.
I believe it became a Holy day of Obligation, when Mary's Assumption became official doctrine of the Church.
Nativity of the Blessed Virgin Mary Catholic Church was created in 1847.
Blessed Trinity Roman Catholic Church Buildings was created in 1928.
It is in August, the same as the Catholic Church.
.Roman Catholic AnswerGod, Our Blessed Lord and Savior, Jesus Christ, is the origin of the Catholic Church.
Roman Catholic AnswerInside a typical Catholic Church is Our Blessed Lord, Jesus Christ, residing Body and Soul, in the Blessed Eucharist in the Tabernacle out of love for each and every one of us.
Blessed Pope John Paul II, of happy memory, approved the Catechism of the Catholic Church.
it was when The Virgin Mary was taken up to heaven
Julius Caesar was not a Catholic. He was murdered before the Church even existed and died as a pagan.
Most parish Catholic Churches have a vigil Mass for all solemnities that are Holy Days of Obligation, if they fall on a weekend. During a weekday, it would depend on how much demand there was for such a Mass.
Like any churches, tithing in the Catholic church is an obligation to pay the bills. Unlike many other churches it is not aggressively enforced. They encourage to sacrifice 5% to 10% of your gross income.
.Catholic AnswerThe Catholic Church is centered in Our Blessed Lord, Jesus Christ. He resides physically on earth in the Blessed Eucharist which is at the heart of every Catholic Church, its "center", if you will. His Vicar on earth is the Holy Father, who resides in the Vatican, an city-state within the city of Rome, Italy.
Roman Catholic AnswerThe consequences of following the Catholic Church is, as promised by Our Blessed Lord, eternal salvation and happiness forever in heaven with Him.