[TYPO3] Temporarily tell typo3 that it is a date in the future

[Benjamin Harwell]

Hi,

I am developing a website which has many timed content elements. This site
is in development now, and I would like to see what it would look like after
the first round of content elements swap. The site completely changes based
on the current season, spring/summer/winter/fall. My question is, how can I
temporarily tell Typo3 that it is a date in the future, or is that possible?

Looking forward to your answers.

-Ben Harwell