Rabbeinu Tam & the Lawsuit

Years ago, a Litvishe individual was on his way to Camp Sternberg, a girls’ camp in Narrowsburg, New York. Although there were married men on campus, it was always difficult to find ten men for the minyanim. If they had a minyan for Minchah and Ma’ariv, it would only be close to shkiah time.
Since it was already dark, he knew that even if there was a Ma’ariv minyan, he had already missed it. So he pulled into a Satmar bungalow colony to catch a minyan for Ma’ariv. To his dismay, they were already up to Shemoneh Esreh. He began davening Shemoneh Esrei with them, intending to say Kriyas Shema and the brachos afterward. Lo and behold, in the middle of his silent recitation of Shemoneh Esrei, he hears the chazan begin chazaras ha’Shatz! Everyone knows there is no chazaras ha’Shatz at Ma’ariv! It suddenly dawned on him that he was davening Ma’ariv while everyone else was davening Minchah!
The debate regarding the proper time to daven Minchah and Ma’ariv is at least 1,000 years old; this unresolved debate still garners discussion.