Plot Time

Albert Einstein amazed the world in 1905 when he published his paper on special relativity, which predicted - among other things - that time was, indeed, relative.

The writers, however, were left unimpressed, because they have been familiar with a similar principle for ages untold: for you see, it is a trivial matter to derive from the Theory of Narrative Causality that - just as things happen because the plot damn well needs them to - they also happen when it is convenient for the story.

This phenomenon is known as Plot Time, and it crops up in a lot of Tropes, such as:

Not to be confused with Time Travel Tropes, though the two do frequently cooperate. Compare 24-Hour Trope Clock, for how times are used in plots.