The ceremonies began in the St. John's Archcathedral in Warsaw where a Holy Mass was celebrated. President of the Republic of Poland Andrzej Duda as well as Prime Minister Beata Szydło took part in the Mass.
Afterwards,President Andrzej Duda awarded the State Orders of the White Eagle in the Royal Palace.
Poles from Lithuania also took part in the ceremonies of the Constitution of 3rd May anniversary in the Royal Palace on the invitation of the President Andrzej Duda.
http://l24.lt/en/society/item/189300-poles-from-the-vilnius-region-at-the-3rd-may-ceremonies-in-warsaw#sigProGalleria0a3b76551e