The following is the expected date and text for this Psalm.
Theoretical Time:
1Clap your hands, all people; shout to god with the voice of triumph.
2For Yahvah is most high and reverenced; he is a great king over all the land.
3For he has subdued the Gentiles under us, and the nations under our feet.
4He has chosen us for the inheritance, and for the glory of Jacob, whom he loved.
5God is gone up with glory, Yahvah with the sound of a trumpet.
6Sing praises to god; sing praises to our king.
7For god is the king of all the land; sing praises to him.
8God reigns over the heathen; god sits on his holy throne.
9The rulers of the Gentiles have returned to the god of Abraham; for the dominions of the land belong to god, and he is greatly exalted.
The theoretical time for this Psalm is overnight between Thursday and Friday in Europe. The headlines became apparent on Friday Morning, May 1, 2009, when May Day Riots broke out in Greece, Turkey, France and Germany.
Riots were particularly noted in Berlin where petrol bombs were used against banks, stores and parked cars. Nearly 300 were arrested.
The Psalm begins with a tone that matches a riot, clapping hands, shouting in triumph. It then turns to the attention of who rules. The authorities think they do, the crowds want to instead. The answer is God in heaven rules.