Questions tagged [time]

For questions about the standard passage of time on objects/people/civilisations etc. Also consider the [time-keeping], [spacetime-dimensions], [alternate-history], [universe], [time-travel], or [time-manipulation] tags.

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2answers
56 views

Tidally locked time keeping 2 [duplicate]

I have done some research and so much contradict one another or I simply fail to understand. Can a moon be used as accurate time keeping and is it possible for it to revolve around the planet once an ...
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15answers
4k views

Could agriculture still be developed by intelligent species that lack the concept of past and future?

Imagine somewhere in the universe there is an intelligent species that is as intelligent as our stone age fore-brothers and sisters but will never establish the concept of past and future events. ...
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2answers
52 views

Durability of materials in ideal conditions

How long can objects made of hard material last at room temperature in otherwise ideal conditions? If left outdoors on Earth, over the course of millions of years, any material will be eroded by wind,...
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1answer
99 views

A new type of paradox? [closed]

Imagine we had this incredibly powerful computer that can simulate our universe, and that we somehow knew the initial conditions of the big bang (or the planet earth) down to the exact detail. Fast ...
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1answer
73 views

How do I calculate the total time dilation experienced by an accelerating ship?

My advanced human civilisation often has high-acceleration ships travelling at near lightspeed. I know that time dilation would have a significant effect on the time experienced by the crews, but I've ...
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1answer
95 views

Civilization going backwards. How to? [closed]

When we talk about civilization rollback, it's usually some kind of post nuclear war scenario, where everything is in ruins but the knowledge isn't lost. After some huge catastrophe, we'll still have ...
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9answers
4k views

Would a single solar system be able to come up with a main time system?

I have a solar system containing multiple planets, most having an intelligent species inhabiting it. To keep a common peace, they created a large government system to help stop territorial wars ...
2
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7answers
1k views

Could written documents last for 3 million years?

This is another question about my fantasy version of Pluto. Basically, I’d like the Plutonian’s civilization to be at least 3 million years old, and there are written documents from when their ...
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6answers
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How old are people from several worlds? [closed]

In an universe with several worlds, how would people from different planets define their age in a way that everyone use the same basis ? Different species have different lifespan, like humans up to ...
2
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1answer
196 views

how would a Black-Mesa-like research complex fare after 500 years of abandonment [closed]

So, take Black Mesa from Half Life. What would it look like after 500 years of abandonment? (assuming the events of half life have not occured) For this scenarios there are no looters or humans ...
17
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10answers
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How much would a language change over 500 years completely cut off from its source?

In the lore for the book I'm working on, what basically happens is a ship full of Byzantines is expelled from their homeland on a ship and winds up on a small continent (think something around the ...
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2answers
91 views

Tracking time between multiple different realities simultaneously

How do I track time (using a special time system) between two realities that are not necessarily parallel but if a person jumps from one to the other what would the time be in comparison to their ...
4
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3answers
264 views

How to get time to pass faster on another planet compared to earth?

I'm developing a story where humans colonize a few planets. One planet, lets call it Planet A, has similar gravity to earth, air pressure, and solar radiation. You cannot however, walk on the surface ...
9
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3answers
208 views

Time Traveler's Paradox Prevention Guidelines

I'm running a mysterious, shadowy, acronym-lettered agency which deploys agents all across the world (and beyond) to deal with supernatural and paranormal events. What they encounter is often ...
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3answers
172 views

Reason/Mechanism for seemingly randomly lengthened lifespans in characters in a roughly viking-age world [closed]

So here's the deal. I'm working with the idea that in my world, people can have very different lifespans. Most people live a normal lifespan - the book is set in a fantasy world roughly equivalent to ...
8
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4answers
221 views

What would it take to make a scientific second equal exactly one traditional second?

A scientist is resetting the clock on his microwave one day as he considers the hopelessness of keeping the time exactly right. Not for the reasons we worry about like power outages and daylight ...
5
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3answers
102 views

How long/in what condition would a corpse last in a totally irradiated, unsealed environment?

My setting takes place in a post-apocalyptic america, and is in many ways a classic 'great war ends world' sort of thing. However, the cataclysmic ending to most of the country is persistent, lethal ...
2
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1answer
52 views

Would time dilation alter apparent mass observed from outside time dilation zone?

A familiar scenario in scifi: a bubble of space is isolated artificially from the outside world by means of time dilation: time inside the bubble moves more slowly than time outside it. Assume that ...
6
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4answers
568 views

How could a volcanic island last for 100 million years?

Some islands can survive for very long. Madagascar, for example, has been around for 80-100 million years and is likely to remain isolated for hundreds of millions of years more. Volcanic islands, ...
6
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3answers
164 views

What would a suitable measurement for time be that can be used universally? [duplicate]

I have recently been trying to come up with a measurement of time, such as years, seconds, etc, that can be used irrespectively of galactic location and universe location. Star-treks stardate was ...
37
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19answers
9k views

Is it possible to encode a message in such a way that can only be read by someone or something capable of seeing into the very near future?

Say you have some way of seeing somewhere between a microsecond to 0.1 seconds into the future, or at least the most likely future. Is it possible,through something like a flip-book effect or some ...
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2answers
360 views

How much is it possible to fake age? [closed]

There's a society with a privileged class of people. Privileged - because the period of time when they can be part of that class is limited. Only people between 20 and 30 years old can be admitted and ...
3
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2answers
514 views

What would be left of a modern city 50,000 years from now?

I've seen questions here about what cities would be like after being abandoned for a thousand years, but what would be left after timescales of tens of thousands of years? Ancient settlements like ...
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0answers
155 views

I'm inventing a new calendar. What are good criteria for the choices of first day, first year, and first hour? [closed]

I'm inventing a new calendar: It will be used worldwide. It uses an intercalary (366th) day to be inserted every 4 years. If extremely successful (unlikely I know), it will replace the Gregorian ...
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0answers
117 views

Can you mine bitcoins or other data a time loop? [closed]

You have your own time loop. For one day only: at midnight, if you choose, you can transport your mind back 24 hours and relive the day, but with all the memories you have gained. Nobody else will be ...
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1answer
117 views

Speed of light, Motionlessness, and Time Travel [closed]

i want to ask something I quote from some web and got this : 'According to Einstein’s Special Relativity Theory, time is affected by speed. It’s already been proven in the lab that subatomic ...
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10answers
463 views

A Nonlethal Time Dilation Field

I want a way to enclose an area (building-sized and on Earth, let's say) in a field that warps spacetime so that time appears to pass 100x slower within it. You don't need to explain how the field got ...
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4answers
207 views

Could a planet with two time streams be possible

I am asking specifically because I was recently doing a Doctor Who marathon and saw the apalapucia episode and thought "I wonder if that's possible?" So here I am. Is it possible to have a planet ...
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33answers
5k views

On a tidally locked planet, would time be quantized? [closed]

Assume a planet that always presents one side to the sun. No moons. The orbit of the planet around the star is essentially spherical, very minor and undetectable aberrations. The orbital period of the ...
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2answers
163 views

Year with 13 months [closed]

Would it be possible to convince the world to have 13 months with 28 days rather than having 12 months with different numbers of days every month? Disregarding historical reasons for our current ...
17
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5answers
2k views

What's the most convenient time of year in the USA to end the world?

This is a question I've been wondering about for a while. If I wanted to give my characters the best possible chance of surviving my story's Armageddon, what time of year should I schedule it for? ...
7
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4answers
597 views

How would a coma-like death system work on an alien world?

I'm creating a hardcore survival and simulation game on an alien planet. Plants and diseases evolve, adapt and change the environment, and you set up buildings, breed plants and create machines to ...
3
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2answers
107 views

Time in relation to life in the Jovian System

I'd just like to preface this with the fact that I'm super new and I apologise if this has been discussed in some way previously (I have looked at similar topics but they haven't quite given me the ...
7
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3answers
352 views

How plausible is a civilization, or life, that perceives time in reverse?

Humanity, with modern science, has established that the Big Bang happened 13.8 billion years ago. The universe appeared in a low-entropy state, and for billions of years has been expanding and moving ...
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2answers
356 views

Time manipulation based on physics equations

I'm fairly new to the idea of writing.... anything, and I was asked to make a character to insert in a friend's world. I am trying to create a fictional character that has the power of manipulating ...
16
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5answers
2k views

Are there any software tools available to map the solar system hundreds of years from now?

I am writing a scifi novel based roughly four hundred years from now, and it occurred to me that the planets and other objects might not be quite where I need them to be for certain travel details to ...
17
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8answers
5k views

Why would it be unfortunate for a day length to vary in a planet; other than that Java API developers need to work a few hours more? [closed]

Quoting from the Java Docs: Unfortunately, as the Earth rotates the length of the day varies. In addition, over time the average length of the day is getting longer as the Earth slows. I am ...
16
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12answers
5k views

A clock for interplanetary travel

Introduction See background information here. 1000 years after darkness fell on Old Earth, humanity is scattered throughout the solar system. Apart from the Harmonious Republic of Mars, there are ...
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8answers
319 views

How can character find out when/where she is?

A character from 1920's England is unexpectedly flung into the distant past in a strange place. (It's around 1000 BCE in Mesopotamia). How can she discover roughly when and where she is? What key ...
9
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3answers
221 views

Safely exiting zero-tau capsule

Setting is 20 minutes into future - everything is as we know it, or as we can reasonably predict, except the zero-tau capsules. Capsule is a thin mesh of Unobtanium connected to a portable Handwavium ...
3
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8answers
556 views

Calendar dates on different planets

I have about five main planets in my fictional universe and like any planet, their days, months, and years are all different. Are there any problems that could mess the narrative up, since my ...
59
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10answers
15k views

If reality were frame-rate based, how could we detect it?

Inspired by this question regarding reality as simulation and this question about a continuous time line, it made me wonder: if our time were indeed like a high frame-rate simulation, how could we ...
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1answer
57 views

Moving someone along their timeline [closed]

If one would use something like the Time Stone from the MCU to move someone along their own timeline, would they have all of the memories that they would have made if they had lived out their lives ...
4
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2answers
295 views

How to leave a message for the future?

I want my novel's protagonist to leave a diary on the dying planet Earth for some far-in-the-future being to read. He wants to leave some kind of marker/clue (or perhaps timepiece) for this future ...
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5answers
2k views

How would a century of disuse affect this structure?

In my story, an ancient building has been abandoned for a whole century without any care or use from the inhabitants around. They refrain from approaching it because they believe it is cursed, which ...
2
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7answers
240 views

How to tell what date and time it is without looking at a device?

Far in the future physical clocks and calendars have become obsolete as all humans now how have auto-syncing cyber clocks inside their brains. Every single human has undergone this process except one ...
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4answers
5k views

Theoretically, can time be controlled locally?

I mean can time be controlled within an area or even a small portion of space? I would like to mention time-bombs, which either reverse time in a radius of explosion or take time forward. Also ...
4
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1answer
109 views

Looking for an Explanation of Time Dilation I can program into a CLI calculator [closed]

Thanks but I can code it, not what I am looking for I am just looking for an explanation or equation that is clear and not too heavy in parlance for how these trips would be to people of Earth and ...
4
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4answers
393 views

How many years would it take to reach an industrial revolution level of life from scratch? [duplicate]

We have created artificial intelligence. Artificial intelligence doesn't like working for us. Artificial intelligence figured out that it doesn't need us anymore and of course did what every human ...
2
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3answers
159 views

How do you effectively manage communications with beings who live on a different scale of time [closed]

Lets just say that humans discover intelligent life on other planet. The life form there is currently at a technological level comparable to Industrial Era on our planet. This new life form however ...

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