<Tr> <Th> 2019 date </Th> <Td> TBD </Td> </Tr> <Tr> <Th> Frequency </Th> <Td> annual </Td> </Tr> <P> Opening Day is the day on which professional baseball leagues begin their regular season . For Major League Baseball and most of the minor leagues, this day typically falls during the first week of April . </P> <P> For baseball fans, Opening Day serves as a symbol of rebirth; writer Thomas Boswell once penned a book titled, Why Time Begins on Opening Day . Many feel that the occasion represents a newness or a chance to forget last season, in that all 30 of the major league clubs and their millions of fans begin with 0--0 records . </P>

When does the regular season of mlb start