Again, not a question for this forum.

Present sense impressions - sometimes it's bordering on judicial notice, it's probably as good as a weather report...

The moon was bright that night - and somebody testifies that the moon was really bright - so what? It's not truthful? It can be verified otherwise...

The purpose of hearsay rule is to exclude untrustworthy statements from the evidence. Statements of perceptions through senses which are actually reasonable or alternatively verifiable are not something people can lie about - so, I think that's why this one was excluded and is admissible into evidence.