Great news! The Watchung PTA Calendar can found HERE on the PTA website and can be syncd directly as a shared calendar from your personal Google calendar. (Assuming you have a Google account.)
To view calendar in Google click to subscribe HERE
*If you currently view your personal Google calendar from your iPhone Calendar and would like to also see the calendars you have subscribed to via Google, once you have subscribed, click the link below and be sure the Watchung PTA Calendar shared calendar is selected.