Yom Yerushalayim, or Jerusalem Day, is observed this year from Sunday evening, May 25, through Monday night, May 26. It celebrates the 58th anniversary of the reunification of Judaism’s holiest city.

Today, Israel’s control of the parts of Jerusalem that the Israeli Defense Forces liberated in 1967 is consistently and vehemently contested by Arabs, who claim those areas rightfully belong to them. This claim is a cornerstone of the daily anti-Israel propaganda disseminated by Mahmoud Abbas and his Palestinian Authority associates.

Here’s the thing, though: the area Abbas refers to isn’t “East Jerusalem” at all. It’s just Jerusalem. What’s more, there is no political entity known as “East Jerusalem”—not now and not at any point in history.