How can I sync my Yahoo! Calendar with Google Calendar?

How can I sync my Yahoo! Calendar with Google Calendar?

I want to sync my Yahoo! Calendar with my Google Calendar account. 
I did this by getting an iCal link within Yahoo! Calendar and then adding it to Google Calendar, but it does not seem to fetch content from that address. 
Is there any way to achieve this?

Solutions/Answers:

Answer 1:

You must try the host name as ‘caldav.calendar.yahoo.com’, instead of ‘calendar.yahoo.com’. This is how I solved it.

Answer 2:

I was looking to sync Yahoo with Google to have it on my mobile. The best solution I found, after 8 hours of research, was to install the SolCalendar app on my Android. There I can see and edit all calendars (for me Yahoo and Google). Using Lightning (on Thunderbird) did not work.

Our Awesome Tools

References

Related:  How do I get my channel recommendations back on YouTube?