NATIONAL RHODE ISLAND DAYWrapping up the original 13 colonies, National Rhode Island Day on October 5th recognizes the last colony to join the Union. The Ocean State joined the union on May 4, 1776.Persecuted for his beliefs in Massachusetts, Roger Williams established the Rhode Island colony in 1636 at Providence seeking religious and political freedom.While the colony was the first to renounce British rule, Rhode Island was the only state absent from the Constitutional Convention in Philadelphia in 1787.lets we will get something more in this and spread the awareness some more .