Not the creator, but I suspect your first block is was in the third row, with a sun on either extreme end: the spots just inside (2nd and 5th) must then be moon

Not the creator, but I suspect your first block is was in the third row, with a sun on either extreme end: the spots just inside (2nd and 5th) must then be moons, as were one a sun, there would then be three moons in a row. The rest follows from there.