{"version":"1","chapters":[{"title":"What is a Leap Year?","startTime":0,"endTime":175},{"title":"The Rules for Calculating a Leap Year","startTime":175,"endTime":316},{"title":"Who Invented the Leap Year?","startTime":316,"endTime":443},{"title":"How Other World Calendars Handle Leap Years","startTime":443,"endTime":798}]}