The modern-day characteristics of women in Belarus evolved from the events that happened within in the history of Belarus, particularly when the "concept of equal rights for women was first developed and substantiated in the late 16th century". The so-called Grand Duchy Charter of 1588 - one of the most important legal documents in Belarusian history - protected the dignity of Belarusian women under the law.[3] Women in Belarus and their contribution to Belarusian society is celebrated annually on the 8th of March, during International Women's Day.[4]