A word or phrase to describe events that happen alongside major historical events

Question

I am looking for a word or phrase that could be used to describe events that happen in at the same time as major historical events. Examples include the darkness that occurred during the crucifixion of Jesus Christ, and the comet that appeared in the sky after the assassination of Julius Caesar. The best I could come up with is omen, but I don't think that is correct.

EDIT: After reading a comment, I see that I failed to describe that I am looking for a word in the context of these events being perceived to be related, as if the comet was some sort of a way to show the importance of what had just happened.

Answer 1

They are coincident events.

From MW dictionary:

Simple Definition of coincident : happening at the same time

the hard economic times and the coincident increase in crime were a double strain on the city's social services

Common synonyms are simultaneous and synchronous. Also, contemporary, though a synonym, is more of an approximation.

Answer 2

To me omen precedes the event associated with it.

When something happens alongside or immediately following an important event otherwise would be a symbol of the import.

Additionally, the event following or extending the duration could also mark, validate, endorse, authenticate, manifest, and indicate.

Answer 3

The fact that two events are coincident or concomitant doesn't mean anything per se, your question, as far as I can understand, is about the relationship between the main event (Ceaser's death for instance) and the minor accompanying event (the appearance of a Comet).

Crucifixion darkness and Caesar's Comet are symbolic events in the sense that they help highlight the historical/religious importance of the main events they are related to:

• representing things by means of symbols or of attributing symbolic meanings or significance to objects, events, or relationships. (Wikipedia)

For instance:

• The Comet became a powerful symbol in the political propaganda that launched the career of Caesar's great-nephew (and adoptive son) Augustus.

A recent symbolic event, Lightning bolt hit Vatican after Pope Benedict XVI 's shock resignation

Answer 4

concomitant

Merriam-Webster

Simple Definition of concomitant: happening at the same time as something else

Full Definition of concomitant: accompanying especially in a subordinate or incidental way

Cambridge dictionary

something that happens with something else and is connected with it

Oxford dictionaries

A phenomenon that naturally accompanies or follows something

Answer 5

Portent (noun) : prophetic indication or significance (Merriam-Webster) —this definition is referring to the abstracted process, although the word is often used as a concrete noun (for instance, in the language of describing beliefs in medieval Christianity, among other religious belief systems, and actually Halley’s Comet is a prime example of how portents were used to reinforce the authenticity of imbuing coincidentally synchronous events with symbolic meaning—look up the symbolic interpretation of Halley’s Comet in the death of England’s King Harold II during the Norman conquest of 1066, about which the Anglo-Saxon Chronicle states: the comet was “a portent such as men had never seen before was seen in the heavens.” -https://www.history.com/news/a-brief-history-of-halleys-comet-sightings

Hope this helps!