Clues
1.
The Big Rocket was set off before the Appolo Rock, but after
the Whiz-Bang.
2.
The Appolo Rock contained no red and was not set off last.
3.
One of the rockets containing green was set off at 7:45pm, this
was not the Big Rocket or the Shooting Star.
4. The red rocket was set off after the blue rocket, but before
the purple rocket.
5. The Exploder was set off exactly 30 minutes after the blue
rocket.