Doubts About Derbyshire?
The county's timetable library is usually updated promptly and usually one of the most accurate sources for bus information. The timetable books have been a beacon of excellence for many, many years.
This page, showing the revised timetable for the Stagecoach Sheffield to Chesterfield service 43 is strange.
No; fbb cannot explain it - but it does differ from Stagecoach's data.
Look at the tome at Dronfield Coach & Horses (again) for the 0717 from Chesterfield.