Added optional chaining on elements that are expected to not exist on the guide listings such as 'episodetitle' and 'year', this fixes the pull for 25 channels that were failing (out of 19,287 channels).
Uses the timezone from the selected timezone of the dropdown on the page, instead of always hardcoding America/New_York. This fixes an offset I was having from pulling the guide from an IP address in the central timezone.
dblake10