I define the timeline and universe by the casting actors. If the Charles Xavier starring by [James McAvoy](https://en.wikipedia.org/wiki/James_McAvoy) indicated that it is the new timeline, if starring by Patrick Stewart, then it is old timeline.

1.X-Men: Day of Future Past did not erase the old timeline. After Wolverine stop Raven from assassinating [Bolivar Trask](https://en.wikipedia.org/wiki/Bolivar_Trask), the old timeline keep going with the Scout and Jean surviving, then 6 years later coming with the Logan. Scout was killed by Charles Xavier and Jean was killed by Logan.

2.Logan recited that it has been 25 years without newborn Mutants, but it doesn't mean that there is no existing mutants. So before The **Westchester Incident** occurred in 2028 of the [timeline](https://xmenmovies.fandom.com/wiki/Timeline#2028). There are still the X-Men and a lots of Mutants

3.Deadpool is was supposed to be in the new timeline, but he used Cable's time machine to kill Weapon-X, makes the events that supposed to happen in Logan in the old timeline Logan happened in Deadpool's new timeline's future 10 years after Deadpool 2.

4.Deadpool killed Adolf Hitler that generated a new timeline without Magneto's superpower activating by Concentration Camp.

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