Tehran Bureau puts together a primer on the historical significance of todays date - known on the Iranian calendar as "13 Aban":
Nov. 4 marks the the day, 30 years ago, when Islamic leftist
students stormed the U.S. Embassy in Tehran and took 69 people hostage.
Seventeen of them were released at various times, but the remaining 52
remained captive for 444 days. The event was a watershed in U.S.-Iran
relations with repercussions still felt today. The main consequence of
that event ....

The Daily Dish | By Andrew Sullivan