#DS9 has two which are Past Tense and Trials and Tribbleations

[the-uss-wossname]

Now importantly a temporal violation does not mean “instance of time travel” but rather “action taken during the time travel to mess up the timeline.”

Over the course of the original series Kirk and the enterprise have 5 instances of time travel which I will list below, and then notably the instance in The Voyage Home, which included the most violations per instance.

The naked time-TOS 1.4- the enterprise travels 71 hours back in time using a full power restart of the warp engines after an environmental disaster drives everyone on the ship insane. This violation caused a split in the timeline.

Tomorrow is yesterday- TOS 1.19- time travel to 1960’s earth via a high gravity black star. Temporal violations include the tearing up of a jet plane and transport of the pilot to the Enterprise, breaking into an air base and exposing several others to future technology. They then slingshot around the sun to reverse time and erase the memories of those involved. This is implied to be a closed loop because of the mind wiping but they exposed themselves to many people who were not mind wiped, which means it may have still resulted in at least one temporal violation.

City on the edge of forever - TOS 1.28- time travel using the guardian of forever to 1930’s NYC, the Edith keeler incident. Violations include their presence in the time period, stealing clothes and parts, encounters with policemen and the homeless. It is implied that this is a closed loop as Keeler ended up in the accident due to crossing the street to meet Kirk, however this is unlikely as they interacted with many people apart from Keller and would have impacted their lives.

Assignment earth- TOS 2.26- time travel to 1968 earth “for historical research” and attempt stop an agent from blowing up a rocket. Their presence is a temporal violation, and they cause several other violations in attempt to stop Gary Seven including an extended encounter with the 1968 police. They argue this is a closed loop but let’s be honest it is for sure not.

All our yesterdays - TOS 3.23- time travel to the history of the planet Sarpeidon, their presence being a temporal violation as well as a breach of the prime directive.

Finally: Star Trek IV the voyage home- time travel to 1986 San Fransico via a slingshot maneuver around the sun. During this trip enterprise crew members:

Revealed the existence of a Klingon warbird to a number of individuals including sanitation workers and park goers as well as a large whaling vessel

Asking any number of California residents about the location of nuclear vessels on the street

Diving into a whale tank in the Monterey bay Aquaruim in full view of god and everyone, and in the same trip revealing subtlety that whales would go extinct in the future

Utilizing a Vulcan neck pinch to shut up a punk on the bus

Breaking into a nuclear facility and temporarily draining it of power, causing a high alert status

An encounter with law enforcement wherein they were exposed to future information and technology

Breaking into a hospital and impersonating doctors, resulting in a general ruckus and the return to health of many sick people, notably using future technology to grow a woman a new kidney

Borrowing a Huey helicopter to transport glass

Trading the formula for transparent aluminum for materials needed to build the whale tank

Exposing knowledge of the future to one Gillian Taylor, eventually resulting in her removal from the timeline

It is unclear whether the events of Yesteryear in TAS would count as they are in fact confirmed to be a closed loop.

By my count this is 15, ten of which are a result of the one visit for the whales and 5 of which are from episodes. The remaining two probably have been lumped in with the listed 15. The majority of the violations involve their presence in historical events and interacting with people during said events, which could be said to be relatively minor but most likely requires a lot of clean up from temporal agents. Obviously many of the events during the voyage home were far more egregious and involved blatantly revealing future technology to people.

But like. He also saved the world a bunch. So maybe cut him some slack, temporal agents