Philadelphia Zoo announced today plans to open to guests and members on Friday through Sunday beginning September 7th. “We took a concentrated look at the visitation patterns of our guests and members since reopening in July and have realized that it makes the most sense to be open Friday through Sunday. This allows people to schedule their visits around upcoming work and school schedules.” says Vikram H. Dewan, Philadelphia Zoo’s President & CEO. “Typically, during this time of the year, we welcome school groups on weekdays, and that’s just not going to be possible this year,” says Dewan.