<https://whenisholiday.com/america/when-is-flag-day-2017.html>
<http://schema.org/description>
"What is the date of Flag Day 2019? Officially it is celebrated on a particular day every year – June 14. But except this, the whole week is a so-called Week"
<https://whenisholiday.com/america/when-is-flag-day-2017.html>