timeline

hi; 

Re- Timeline; the timeline options seem to be a Knightlab cretaion timeline.js supported by google spread sheets. I'm having a problem and I'm really pressed againt time and I love to use this for 3 courses as a course calendar/ Roadmap. my problem is the course is only 12 weeks and the time line is showing from 1900, I need to be able to control the timeline to show only a shorted period of time, only 6 months. how can I do that? can someone please help? many thanks, Mushtak

https://docs.google.com/spreadsheets/d/18UrUEWM1tSZgNGjEoJNEQc7Kn2MBDJml...

Summary: 
help with timeline creation