More like an hour (or two, but less than an entire day).

Tbf, a single jet like Taylor Swift's flies "only" every other day (170 flights out of 365 days in 2022). So her jet might not produce as much as one person's entire year - it could be a little bit less (like 1-6 months?:-P).

I have not researched it but I still wonder about the facts there: like if each plane can hold 20 people, and takes >12 people each trip (I'm totally pulling all these numbers entirely out of my ass btw), plus there are security considerations for her to appear in public and be mobbed, where innocents could be hurt e.g. an unnoticed child trampled to death - just how cost-effective vs. not is it, really?

Unfortunately we will almost certainly never know, bc our for-profit media will only allow stories that make us angry and depressed. Boring stories like "Boeing flights do not fall from the sky >99.9% of the time" don't make the headlines or even the back pages.

I don't know if Taylor Swift is right to fly by private jet, and I don't know that she's not, I'm saying we'll never know, nor can we trust our media to tell us, nor our leaders to care (except in the sense of accepting bribes to specifically not care - probably not even from her directly but other business people like Musk and Bezos who want to fly their planes, and may be better at hiding how many trips they take whereas she could be more naive about her own usage).

You don't have the power to fix it, no matter what they say. So be free and do as you please.:-) How we all choose to be is not about reaching any kind of goal, these days.