{% if item.date %}{% assign canonical_date = item.date | date: '%Y-%m-%d' %}{% assign date_epoch = item.date | date: '%s' %}{% assign date_year = item.date | slice: 0, 4 %}{% if canonical_date == item.date and date_epoch != item.date and date_year != '0000' %}{{ item.date | date: '%b %-d, %Y' | escape }}{% else %}Invalid date: {{ item.date | escape }}{% endif %}{% endif %}{% if item.tag %}{{ item.tag | escape }}{% endif %}