Easter and the holidays that are related to it are moveable feasts which do not fall on a fixed date in the Gregorian or Julian calendars which follow only the cycle of the sun; rather, its date is determined on a lunisolar calendar similar to the Hebrew calendar.

The First Council of Nicaea (325) established two rules, independence of the Jewish calendar and worldwide uniformity, which were the only rules for Easter explicitly laid down by the council.

No details for the computation were specified; these were worked out in practice, a process that took centuries and generated a number of controversies.

Other features introduced in the 1950s included the push-type rear exit doors, wrap-around rear soft seating, fluorescent lighting, and the air-ride suspension that is still the standard today on today’s transit buses. 6259 - Manufactured by Mack Truck and Bus Company, Model C49DT first arrived to the fleet in 1956 and was in operation until 1969 in Staten Island and NYCT Brooklyn routes.

The “DT’ in the model number stand for “Diesel Transit,” this model was delivered with cushioned seating but converted to hard plastic in the mid-1960s because of vandalism. 8466 - Manufactured by General Motors, this Model TDH 5303 were ordered in 1966 for Ma BSTOA and NYCT to replace 1940s and 1950s vintage buses acquired by the City after the Fifth Avenue Coach Lines takeover in 1962.

This series was the first new fleet of New York City buses designed and built with air conditioning and also featured large illuminated advertising signs on each side.

These buses proved to be so reliable and durable that several were selected to be rebuilt in 1984 to extend their useful life lives. 5227 - the last non-wheelchair accessible bus to operate for NYC Transit, pulled from service in 1993. Another classic “old look” style reminiscent of thousands of similar buses that operated throughout the City from the 1950s to the early 1970s. The buses will not roll during periods of rain and snow and Nostalgia Train runs will be canceled in the event that winter weather necessitates storing the subway fleet along express tracks underground.

Icon of the Resurrection, with Christ having kicked down the gates of Hades and pulling Adam and Eve out of the tombs.

Christ is flanked by saints, and Satan—depicted as an old man—is bound and chained.In 1946, this car received a retrofit of bulls-eye lighting and a public address system. 1575 – Originally manufactured as an R7, this car was involved in a wreck in 1946.Sent to the American Car & Foundry factory, the car, which is equipped with fluorescent lighting and smooth sides, was rebuilt as the prototype of the next generation R10 subway car. Bus customers using the M42 crosstown route will have the opportunity to ride a vintage New York City bus for the holiday season. The crosstown buses run from Monday through Friday, December 1st through December 19th .The historic fleet is appreciated by Transit's top managers for their historic significance."These buses are a living, breathing part of the city's history and each has a unique story to tell about the era in which it operated," says Darryl Irick, Senior VP of NYC Transit Department of Buses and President of MTA Bus and a former Bus Operator himself.Some of the vintage train cars are usually housed at the New York Transit Museum in Brooklyn, where they have honored positions as static displays reflecting a time before automated voice announcements, air conditioning or bright fluorescent lighting.