Now that Pokemon Sun and Pokemon Moon are now available worldwide, there are things everyone should know about, primarily the version differences.
Just like other Pokemon titles in the past, Pokemon Sun and Pokemon Moon have different Pokemon that you can catch. In addition, there are time differences between the two versions: for Sun owners, the in-game clock will be in real-time and will depend on the system clock of your system whereas those who will get Moon will have their clock reversed 12 hours.
Here are the exclusive Pokemon that are available in each version:
Pokemon Sun Exclusive Pokemon
Pokemon Moon Exclusive Pokemon