If you could go back in time for 24h, no consequence on the timeline, what would you do?

Option 1: Attend Stewen Hawking's time traveller party - he likely won't expect someone so dumb though
Option 2: Watch and experience Warsaw Pact invasion of Czechoslovakia - I often hear our conservatives argue this was actually friendly
I'd definitely try to record everything in both cases.
- I've always suspected that Stephen Hawking's time traveler party did happen and there were many people there but Hawking's agreed to tell everyone that no one showed up.
  I bet they also made a clone of Hawkings and left the clone behind and took the real him to the Future with them.
  He's probably partying in 2743 right now in an 18 year old body, surrounded by beautiful futuristic space babes with neon hair and skintight glitter clothes.
  
  But seriously though, if someone did show up, it's possible saying that no one did was simply required. Imagine everyone now thinking the future people will save us, and suddenly there's no future.
  But I am sure it would still have some effects because of the butterfly effect. Hey, perhaps travelling into the past creates near-infinite timelines each time with all possibilities. I mean, it would affect the time traveller himself, and something would be slightly different each time. Simple example, because of the time traveller's presence things will go different and they will arrive at slightly different time due to which they will again arrive at a slightly different time. They may know something else, do something else, with some different effect in each time. But there's only so much a minor thing could do.
  Perhaps if Hawking admitted to the vistors, rather than an unimaginable number of similar timelines, there would simply be no... but then the visitor ceases to exist... but if they already travelled back they must have...
  Fuck, I hate getting stuck thinking about time travel.
  But perhaps that's the thing, admitting to this would have perhaps resulted in some catastrophic events. But, like, how would you ensure it does not happen.
  OK, let's trace it.
  Time traveller goes back, returns, Hawking admits it, we're doomed with hope, there's no future, no time traveller to return.
  But!!! They have already returned to their timeline. Maybe it doesn't effect their timeline. Maybe they just doomed one timeline, and only one, because in that one there won't be...
  No, what the fuck, I can't just... or would that open another timeline... No. If you can't affect your own timeline it's not time travel.
  Crap.
  God damnit!!
- "Warsaw pact" makes it sound like it wasn't orchestrated by the fucking russians... It was friendly if you don't count the tanks fire, people overrun by them, tens of thousands people displaced....

Initially I read that as “you can go back in time for 24 hours” and thought why would 24 hours ago be that interesting? :)
So my initial answer is: Not eating the late night burger I had last night.
My final answer is: San Francisco in the 60s/70s to hang out with the Dead and all the other amazing artists of that time. Maybe see a show at the Fillmore.
- I read it like that at first as well and actually have a use-case for it. I have a certification exam next week and that 24 hour rewind would be very helpful if I do terrible on the exam. lol

I would go back to when this post had no comments and be the first so I can explain to everyone else what no consequence means. That way when I come back to the present I can still be disappointed by half of the answers in this thread.
- Except no one would be able to read your comment before posting because, again, no consequence. So that's pointless.
  
  The second sentence of my comment illustrates that lol. It's was supposed to be tongue in cheek.
- Right? Even with my edits to clarify people just want to buy bitcoins lol.
  
  The only comment about bitcoins I've seen so far is scamming someone out of their wallet, which could actually work. If you got their account information, that's just data that is a memory. With the number of bitcoin wallets people have lost the login information for, it's actually a workable idea for this scenario.

At first I thought you meant "go back in time 24hs" in which case my answer would have been "yes! And get my haircut elsewhere!!!" But seeing what you mean for real, and with no consequences, I'd go back in time to see extinct animals. Shame I can't bring photos back with me
- Thought the same thing and was like, go the fuck to bed and do not watch that shit show of a boxing match.
  
  Lmao, it was just a jerk going ez on a grandpa. I got scared for mike but realised jakes not gonna do shit.
- Lol, that's how I read it too and it got me thinking about the most inconsequential change I could make in my life in the last 24 hours. Maybe I'd get an extra ketchup packet with my lunch combo. Mission accomplished I guess.
- and get my haircut elsewhere
  Was this your hairdresser, bruv?
  
  Lol no but similar energy
- Why would bringing back photos have consequences? It's not like it'll suddenly make them become extinct! I assume the OP means consequences on the past not future of course! :)

Gonna go see some dinosaurs
- What if you went back and the dinosaurs all just spoke perfectly understandable English but with a British accent? Nobody would ever believe you when you came back since “all of the science” suggests that dinosaurs didn't speak modern English with British accents.

My two choices:
Pontic Steppe, around 3000 BCE. Likely region where Late Proto-Indo-European was spoken.
northern Lazio, around 650 BCE. If possible/reasonable I want to spend a bit of time in an Etruscan city, then in a Faliscan city, then in a Sabine one. I'm OK travelling by foot if necessary, as long as there's always people talking around me.
In both cases I want to be able to record everything people say. Preferably video, but audio is good enough. I just want to know better about languages of the past.
It's kind of tempting to include 1450 Uruguay as a choice, since we barely know anything about the Charrúa language. However the Charrúa weren't exactly friendly to outsiders, so this option would be only if neither side can interact with each other.

I'd try to meet the Buddha, and see if he could shed some of that instant enlightenment on me. In the stories, he seemed to be able to say just the right thing to people to wake them up out of the matrix.
My first answer was "buy Apple stock" but no effect on the time line probably means I don't make any money. (well wait, what about enlightenment then, does that come with me?)

I would prefer to go back in time literally 24 hours and HAVE consequences.
I would not eat the food that likely gave me food poisoning.
- Hope you feel better soon.

Go back to see how they built Stonehenge
- Turns out they were utilitarian and had no bearing on astral observations.
  
  What kind of utility was it used for?

Prevent myself from being born.
- You can't affect the timeline...
  
  Maybe it's just for the catharsis.
  
  Still worth a shot

(Assuming that "no consequence" also means that I won't die on the trip...)
Witness the Tunguska impact.
See a Beatles show when they were just some small time dudes playing in a crummy club.
Visit the Great Exhibition of 1851 and go inside the Crystal Palace

Going back to slavery and beat some slave masters
Meet my mom when she was younger, maybe in high school. Tell her that she seems like a lovely young lady and very smart. I don't think she heard that enough.
Go back to the first day I got my first cat.
I would like to see a royal party of some kind.
Go to a Shakespeare play while he was still alive.
Go back to where my grandma alleges she met Bill Cosby to confirm if it's true, and, if so, punch him because apperently he was rude as hell.
- Why not do the first one in the present?
  
  Because of the consequences and the ease of access to slave owners in the past I guess.

I would go back to ancient Rome, Athens, or somewhere similar and just do turism.
It would be incredibly cool to just look around and feel it how the world has back then. Video games like Assassins creed Odyssey scratch that itch but it would obviously be cooler in real life.

I'd like to go back many times to earlier in my life and try different dialogue options.
Like that time you thought of the perfect comeback two days later?
Or just learn how people act and react. If I say this, they react that way. Now if I say that how do they react?

I wanna see Carthage

Go back to when I sold all 100+ Bitcoin for like $5 each and tell myself "no".
- Said no consequences so sorry, your younger self doesn't believe you and sells them anyway.
  
  "Some weirdo just tried to convince me this shit will be worth millions lol. Better sell it right away and get those 200 bucks back."
- Damn
- Oh fuck, I felt bad for ditching two that I got free with a domain I bought, but over a hundred?!

I'd love to get the chance to talk to Isaac Asimov and talk to him about the future and how he decided to start releasing his stories. Probably around 1972 because I liked bicentennial man a lot.
Other than that:
go back to see socialist radical anti-authoritarian Jesus do his real protesting instead of the biblical king washed stories.
or go back to the fall of Amen to see the end and beginning of monotheism of the modern day and understand the actual departure of the worker force
see if I can find the actual great flood that all the myths seem to talk about and see if the conspiracy of it being about the Mediterranean basin is true. So probably Mesopotamia time and hope it's recent enough memory to hear actual stories.

Assuming no consequences means I won't die, or catch a disease or something, I'd go back like a hundred million years or so to look at dinosaurs.

So many bands I'd love to see! But that's somewhat small fry, so to speak, so ancient history, if I could travel to a different location also instantaneously (guess that'dhave to be possible or else it'dbe pretty boring or hard work!). Ancient Egypt, Greece, Central America Mayans... but then, are WE immune from consequences also?! Free from contracting diseases, free from being sacrficed to a god or getting enslaved?! Can we communicate with them?! Dinosaurs would also be awesome, if immunity was guaranteed....chomp!
Or perhaps just see my dad again :)

Go back to the moment when the current highest level administrator of Twitter set the password. Then when I come back with the password. Now in the present, I log in and delete the entire twitter server.
History didn't change, I just went back to retreive some information to be used in the present.
😈
- Hope they don't ever rotate the passwords.
  Also it would be pretty hard to remember the likely very long passwords.

If there were no consequences, I can think of a few different things I'd wanna see.
Just out of morbid curiosity, what an atomic bomb dropping looks like when it explodes, being there in person rather than just seeing footage (from a safe distance with protective equipment, just in case I can still get hurt, otherwise get as close as possible if there are absolutely zero consequences to my actions, as if I'm a spectator in minecr*ft).
Probably just go back in time and watch as many cartoons as I could back in the early netflix streaming era because I absolutely love cartoons.
Definitely go back in time and watch either An American Tail or Fivel Goes West in theaters because I really like both movies.

See Jimi Hendrix live.

Camera in hand, time to visit Chavín lands! They're one of the earliest recognizable societies of the Peruvian Andes. Given that a language barrier would be true for pretty much any "too far back" visits, might as well go with one that I'm really damn curious about!

Go to Teotihuacan to see how non/hierarchical it was, maybe trip balls if the opportunity presents itself.
Go to Harappa or Mahenjo Daro and see how indus seals were used.
Kindly ask the Minoans if that topless lady holding the snakes is in charge.
- Tired: obsessing over the roman empire Wired: obsessing over other ancient civilizations

Find out a burning question that paleontologists have but can't find an answer to and tell them where to look.

I think it'd be neat to go to like 10,000 BC and just live a day in the life of some tribe/ancient city.

- Stop trying to do the nasty in the pasty.

I could finally ride every ride at Disneyland.
- Oh, I thought you meant just repeat the same day that just happened. I did not understand the question.
  
  Still a solid answer, though, even not understanding the assignment.

If I can transport things back and forth, I would probably go and max out a credit card and buy all of the gold that I can to bring with me for trade.
Then I would go to the library of Alexandria and use my cell phone to get photocopies of as many books as I possibly can, and in the downtime I would go to any open Street markets and purchase any cool relics that I can find.
Then I could come back and share some of the Lost books of Alexandria with the world and also have period correct relics that have somehow magically not been exposed to a thousand years of environmental corrosion.
Then again, that would probably also mess up their radioisotope dating but I don't know if it's specific enough to only cover a thousand ish years.
Maybe if I have a little more time to prep I can find some place that I know hasn't been Disturbed and like put them in an airtight safe and store them for me to go back and ReDiscover now.

I'd go back to fuck at a Roman bath house in ancient times. Fuck it, no regrets.

Oh, not back to yesterday? Back to any time/place for a day?
I think it would be too hard to access any of these events or people - you'd go back then just end up in jail or something. I would like to see the moon though, so if it's a literal anything is possible situation I'll hitch along with those guys, on the first moon landing.

Probably see the dinosaurs in the late Cretaceous. Just before the KT extinction. I want to know how accurate we are about what dinosaurs looked like. All we know are from the bones and some fossilized skin and feathers here and there. I bet there are a TON of animals we don't even know about because they were never fossilized. What did the T-Rex use their little arms for? Were dinosaurs covered with waddles, weird skin flaps, some hairy stuff, and what color were they? For comparison, if we drew modern animals like we draw dinosaurs from just their skeletons:

Berlin Wall sightseeing.
- Berlin Wall sightseeing.
  I actually did that haha!! I'm Canadian, but we lived in Germany from 1987 to 1992. So I got to see the wall before and after he fell. Honestly it was terrifying for a kid. There's was military every 20 meters or so, and they wouldn't allow people to get close to the wall. It's one of rare instance where I didn't feel safe, even being with my parents as a 8 years old-ish.

Kick my dad in the nuts on my conception night
- No consequences

Kill as many communist leaders as possible
edit: FUUUUUCK NO CONSEQUENCES HOW DARE YOU

Visit the library of Alexandria before it burned, just to see the insane amount of books.
As someone else commented, see how stonehenge was built/used.
Find out how the Antikythera mechanism worked and how it was used.
Witness the construction of the pyramids.
Experience the telling of the norse mythology.

Since I'm in tremendous pain from an inner ear infection; I would CLOSE THAT DAMN WINDOW!
- No no no, that would have severe consequences on the timeline. You have to endure that.
  
  Once again the faith of the Timeline is decided by my inner ear 😔

All good answers, but the simple fact you were not self centered but curious and asked what OP would do back, made your answer great. Thank you. Up vote freely given.

Choose the last non winning lottery numbers. It’s currently at 130 million. There was no winner. So it shouldn’t affect the time line. If op thinks it does I will revise my choice.

Attend the 1934 Nuremberg rally.
Not keen on the politics of it obviously but you can't deny the nazis knew how to put on one hell of a spectacle.

- I'd do the original Bitcoin faucet a few times for several reasons.
  I wasn't alive much less 18 or older in 1986, and thus selling millions of dollars of stock would raise some eyebrows at the FTC or whatever.
  What company would hold it? How would I trust them not to say "Anandoned account. Our money now 😏"
  Bitcoin is less tracable either way. The problem specifically said without changing the timeline, meaning that you and your tax documents would be completely oblivious to the stock until you get back.
  The faucet used to give out five whole Bitcoins. So like 500k each time. Do multiple addresses and you could easily have a hundred million dollars. I don't know how you'd keep track of those addresses. Maybe generate them before you go back and store a piece of paper on your body containing the addresses? Make sure they're the old 1B addresses, not the new ones.
- No consequences means no benefit either.

Put a large bet on Leicester City to win the Premier League.
The odds were 5000-1, and the last person standing cashed out their £50 stake at £75000. I'd have put £500 on for an initial £2.5m, maybe an accumulator on the top 4 to double it, and live a comfortable life off of the winnings.
- What I do redacted.
- Good luck with the bookies paying out. Had betway refuse to pay out a £500 bet once. Deleted my account with them shortly after.
  
  There was a huge worry about this at the time, but considering the odds were so large, there were maybe 2-3 people that had actually made this bet that kept it after Jan. If they were to not pay out they'd have worldwide exposure and every other bookie taking their business.

Go back in time and stop diddy from diddling so bad.

I'll have to think of a scheme to extort some rich guy's Bitcoin wallet.

Go back to 1986 and slip a morning after pill in my mom's drink... Oh wait, no consequences? Fuck me...
- Ideas like this is how you end up becoming your own father.
- So many people want to not be born... Hope you guys are just jocking.
  
  Haha yeah, I'm joking, haha, the PTSD and depression are my favorite hobbies, this world is such a happy place and totally is not going to shit, I love it so much haha 🥲

I'd go back to the Yukon Gold Rush and make sure Fred Trump never made it out of Canada.
Edit: Doh! No consequences... huh. I'm not really sure it would be worth the trip then.
- Remember, there are no consequences. Whatever you do will be reset, so this wouldn't work

Ops mom.

Killjoy: If there are no consequences there can be no memory of the event either. Our own future (from the time of returning from the past) would almost certainly diverge from the path of no knowledge otherwise, and that would be a consequence.
As such, every one of us might already have this ability, we just don't remember doing it.
- My post, my rules lol! The timeline is identical, but you remember what you did during those 24 hours.
- I think they meant no influence on the target timeline, not that you'd forget about the event.

I’d go back to “old enough to understand but still young enough to do something about it” me and have a nice long conversation 🙂
- But no consequences
  
  fair, but I'd argue no one can go back in time with out any consequences. even OPs first bullet could have consequences through "meet the man and musicians". did we not learn anything from Back To The Future 😀

- Geez you are such a loser lol.

Is it possible to travel to the past without changing the timeline? Even going to a diner for a meal will make a ripple.
- Well considering time travel isn't a thing in the first place, I get to make the rules!
- If you assume that your visit creates a different timeline than the one you're coming back to, sure.
  
  Back to the Future but instead of going back in time, you're actually jumping to an alternate universe that happens to be the exact same as yours but whose time is shifted enough that the date there is the one you wanted to go to

I would [REDACTED] so that no one has to deal with this shit.