Today is May 2, 2018, the 20th anniversary of the Battle for Hogwarts.
We celebrate the victory over Lord Voldemort, but we also remember the many students and members of the Order of the Phoenix who fell in the battle.
Despite the destruction and suffering, the Battle for Hogwarts is the first step in a brighter future; the birth of Victoire Weasley is a sign of change as her name is a special symbol of the victory.
Is this day of joy and remembrance also the anniversary of the reunion of Harry and Ginny? I'd like to think so, but only JKR knows for sure.