I believe, which is what is asked in this topic, that there are evidences of consequences on the earth, as well as in organisms, while these are really interpreted in different ways depending on worldview and perspective. The layers of rock, for an obvious instance, might have accumulated for hundreds of millions of years from gradual processes that are ongoing, as understood in one worldview and perspective, or occurred as a result of great global catastrophe, as understood in another worldview and perspective, rather like all the formation which quickly formed from the volcanic explosion of Mount Saint Helen. The patterns in living organisms could result from gradual random processes that are ongoing over many hundreds of millions of years, in one worldview and perspective, or from planned design at any time, in another worldview and perspective.
It may seem like one is with a stronger case, but this is yet with that worldview and perspective with this bias in that.
Still my views are not crystallized, and change a bit as I consider more and more as I grow and age. But I don't presume either I or others really know truth so fully about most things, while I see some arrogantly speak with apparent claim that they do.
I am not so sure about how old the earth is, but at this point, as it changes a bit with more consideration, I think it could have been an unformed planetary body for a very great long time, that even the Bible could allow for, while special creation from God happened as described more recently. Still how long ago that was I am not so sure about.
If there already is light enough for vegetation (any photosynthesizing organisms), which is what the account says, twenty-four hours to survive is no issue. The account says there was light, though why ask what it would be, I wouldn't know and could just guess, too.
If the world was created as a viable place for life, and living beings were put in it, any observer coming in then or any time afterwards, weeks or hundreds of thousands of years after, with not seeing God would do that would conclude there is age seen there. It is stretching it, which the said observer might do, to say if God made this it is with deceptive lie in the design, while the arrangement in the design would have been necessary for having a viable place for life and living beings put in it, which is presumed so to be with this deceptive lie in it. Without the presumed deceptive lie in it, the viable place life with living beings put in it would not be possible.
Indeed, with the worldview and perspective you come with, what evidences you consider and bring up do not verify conclusions to many others, including me. I still can respect you with your conclusions though they do not convince me.