I know this has been done before but I'm too lazy to go bump it and I'm bored so lets do this.
What do you do when you have a day to do a big project?
[spoiler]move to venus, the days are considerably longer there[/spoiler]
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Why don't you go fluorine, uranium, carbon, potassium Oxygen, fluorine, fluorine Boron, iodine, technetium, hydrogen!