I have used HebCal for years. I now live in Israel.
When I subscribe to ICS with latest outlook using Israel as location, it puts my events straddling two days - e.g. a chag will be from 11pm to 11pm the next night and each "date" from 11pm to 11pm next time.
Its very hard to actually work out what is what and renders the calendar useless.
Customer support service by UserEcho