Every year since Moses transcribed the Torah on Israels transit from servitude to freedom, members of the nation have blessed their own counting each of the 49 days that follow the first day of the Passover festival.
The practice of not eating wheat and other leavened grains during the 7 days of Passover flows into this - (7 X 7) 49 day cycle that preceded the traditional wheat harvest. On a personal level each 7-day cycle of blessings relates to one of seven dominant personality attributes each of us possess.
The 28th of Iyar is the first day of the last 7-day cycle, arguably the most mystical of the prior six cycles. This first day relates to the way you manifest the expression of 'kindness'. In the prior six 7-day cycles kindness features more esoterically in the attribute of each cycle, but the seventh is the way you manifest its expression from all of the preceding attributes.
We must not forget this day celebrates the 1967 victory in the war that was thrust upon Israel. The first shots were fired on 26 Iyar, the sixth day of the sixth 7-day cycle - the dominant attribute of 'foundation' in a war that would last just six days. The cumulative blessings that precede and complete the sixth 7-day cycle cause the sixth to face, project and manifest in the seventh 7-day cycle.
On 26 Iyar (5 June) 1967, to the absolute, stunning astonishment of every Jew and against all negative sentiment, even those espoused by Israel's generals, a small battalion of Israeli soldiers beat back Jordanian and Egyptian positions to capture the ancient city of Jerusalem that had been torn from Israel's possession immediately following its declaration of independence in 1948.
By 28 Iyar (8 June) 1967 one miracle after another were evident even to Israel's chief doomsayer, General Moshe Dayan. Still, he opposed an attack on Syria believing such an undertaking would result in losses of 30,000 and might trigger Soviet intervention. Prime Minister Eshkol, was more open to the possibility, as was the head of the Northern Command. Unexpectedly, the situation on the southern and central fronts cleared up, intelligence estimated the chance of Soviet intervention had been reduced, reconnaissance showed some Syrian defenses in the Golan region collapsing, and an intercepted cable revealed that Egypt's Nasser was urging the President of Syria to accept a cease-fire.
By 28 Iyar there were no more doubts about the miracles that had transpired. Certainly some suppressed their elation and others managed expression of emotional attributes, but even the stoic so called Jewish non-believers overcame inhibition. Everyone agreed that by the 43rd of 49 day's a series of miracles had led to a 3 day victory in a war that would be over 3 day's later. And on the 50th day each year Israel rejoices in the day Moses transcribed the Torah and bound the nation under God.
Like the nation acknowledged the miracle that pure Jerusalem temple oil had burned for 8 days during the Maccabees battle against the Greeks, the nation-wide recognition that Israel's Six-Day-War victory was led by a series of miracles is the hidden cause of our celebration. Jerusalem was once again in Jewish hands a city, to be restored, celebrated and developed for the future spiritual well being of the entire world.