A witness.
An eclipseAn occultation
EclipseAn eclipse, possibly.
It is the mode.
It is called the mode
A polymath.
An event or occurrence.
a event that occurs over and over
An event planner is a person who makes invitations to a given event.
A person who sets up an event is called a party planner
An eclipseAn occultation
artist
A monument
OmnipresentOmnipresent
planet ?
diary
zen master
Allusion:a brief reference to a person, event, place, or phrase