Shrove Tuesday date can be any between 3 February and 9 March inclusive. Shrove Tuesday occurs on these dates: Shrove Tuesday Shrove Tuesday (also known in Commonwealth countries and Ireland as Pancake Tuesday or Pancake day) is the day in February or March immediately preceding Ash Wednesday (the first day of Lent), which is celebrated in some countries by consuming pancakes. In others, especially those where it is called Mardi Gras or some translation thereof, this is a carnival day, and also the last day of "fat eating" or "gorging" before the fasting period of Lent. This moveable feast is determined by
National Museum (Rio de Janeiro) Brazil and the Algarves (1769–1826) in 1818 with the name of "Royal Museum", in an initiative to stimulate scientific research in the Kingdom of Brazil, then a constituent part of the United Kingdom of Portugal, Brazil and the Algarves. Initially the Museum sheltered botanical and animal specimens, especially birds, what caused the old building where it was located in center of Rio de Janeiro, to be known by the population as the "House of the Birds". After that, with the marriage of King João VI's eldest son and Brazil's first Emperor, Dom Pedro I (1798–1834), with H.I. & R.H. Archduchess