The sender writes:
On this card you can see the celebration of Nowruz in Tajikistan. Every year on the 21st until the 28th we celebrate! The girls are wearing our national dresses while dancing!
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Nowruz is the name of the Iranian New Year. It marks the first day of spring or Equinox as and the beginning of the year in the Persian calendar. It is celebrated on the day of the astronomical Northward equinox, which usually occurs on March 21 or the previous/following day depending on where it is observed.