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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15
votes
6answers
2k views

Asynchronous society

Our world has easily observed year, month and day cycles. They and their multiples, such as decades or weeks, and fractions, such as seasons, hours, minutes, and seconds are easily available and used ...
2
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3answers
501 views

Time system for a Ring-World

What sort of time/date system would suit a Dyson Ring, also known as a Ring-World, an artificial habitat megastructure shaped like a circular band, located in the habitable zone encircling a star, in ...
38
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16answers
12k views

What would an Earth with no timezones be like?

If we abolished the system of time zones, and everywhere followed UTC (or another arbitrary timezone), what would the possible advantages or disadvantages of this system be? If you can think of any ...
37
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20answers
8k views

How would people tell time if it was always day?

So, if I have a civilization that lives in a hollow planet, with a sun in the middle. How would they tell time? The sun always shines, and it is a Constant Spring/summertime weather. They have animals ...
2
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2answers
385 views

If Santa can time travel, why does he need elves to make toys?

Santa is a time traveller. Notice that when going back in time, he steals the presents which he delivers going forward. So, what do the elves do?
10
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4answers
983 views

Santa is a time traveller. How does he not violate causality?

People wonder how Santa can deliver all his presents in one night. It's, simple: he's a master time traveller. (This post will form the base of a long series of questions). Here's how Santa's usual ...
0
votes
1answer
116 views

Could a universe with something like special relativity based on position instead of velocity be logically consistent?

In a parallel universe if two objects occupy different positions in space then in the reference frame of each object the other has length contraction and time dilation. If the two objects are very ...
7
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3answers
217 views

The time locked vault will open in accordance with the prophecy

I have just invented the Macguffin. It is ultimate wondrous power for anyone who is wise enough to wield it... But humanity isn't ready for it yet. I need to put it out of reach for a significant ...
53
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25answers
10k views

What all stops working when I pause time?

Somewhat, not really related. In my young adult story, the main character has a mechanism that allows her to pause time, and do things while everything is frozen. I have no problem 'magic'ing the ...
16
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12answers
2k views

Every now and again God puts us on pause. Can we detect this?

Imagine that God has many universes to deal with or just needs a break sometimes. He has a pause control. What plausible mechanism does God use to perform the pause without breaking the laws of ...
1
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9answers
495 views

Speeding up technological development using a time machine [closed]

Imagine that we have invented time machine. Now we can go back in time okay? Now if we go back in time and teach our ancestors thing which were discovered or invented thousands of year later after ...
-1
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6answers
2k views

Is 1000 years long enough for a major evolution to happen? [duplicate]

Writing a story where people have evolved to harness their brains to have control over different elements depending on personality. Is 1000 years a long enough time for this to plausibly happen? Does ...
196
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29answers
30k views

I'm stranded on an alien planet. How do I measure an earth year without a clock?

I just got shoved through a stargate onto a planet I don't know. I was told the gate would open again in exactly one Earth year. I wasn't carrying anything; I don't even have my watch. How do I know ...
3
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1answer
4k views

Is it possible to stop aging process completely? [closed]

Can you propose a System where it Will be possible to stop the aging process? Simply put, can any one propose a mechanism/principle/theory? OR A reference where something like this has been ...
1
vote
2answers
436 views

Accurately Measuring Sidereal Years For Calculating Tropical Year

I decided that a sidereal year in my world is about 435.126 days long. It would follow that leap years occur every 8 and 125 years (with a double leap year every 1000 years!), but I hadn't though ...
1
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4answers
249 views

using a paradox to multiply time machine

I've asked myself many times if it's possible to multiply a time machine, but never really found any statement on how. Let's say we're in a field with one time-machine (the First one and still only ...
3
votes
1answer
199 views

Which reference frame in our solar system experiences the most time?

Suppose we must choose a location in our solar system for a self-sustaining space-station. Imagine that the station will house experiments which must be completed as quickly as possible for the ...
9
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2answers
647 views

A world with simultaneous precognitive dreamining

I have my own theories, but I'ld like to hear other oppinions about how this kind of scenario could turn out. This is one part of a story I'm developing. Setting: We are talking about a medieval / ...
5
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2answers
447 views

How would humans adapt their language in response to moving through time at different rates relative each other?

Okay, so humans are finally transitioning to a space-colonial society. We sent ships out, colonize worlds, etc... We aren't really in the business of sending multigenerational ships. Instead we use ...
6
votes
6answers
472 views

What are some likely ways a type-I civilization would keep track of time; and, from what point of beginning?

For an intelligent species of life to attain so advanced a level of technological development and operation as to be considered a type-I civilization, in a number of evolutionary scenarios they'd ...
3
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3answers
611 views

How would our society react to a major time-jump?

Our omniscient God has decided to intervene for (arguably, if you ask some religious people) the first time at least in a very long time. For matters unknown to us, He has frozen all time on Earth, ...
10
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3answers
968 views

What difficulties would there be for society if people could manipulate time?

There is now a device which one can use to store time. It is small and inconspicuous, but takes some setting up to use (explained more later). Essentially, it will temporarily remove a region of space ...
20
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6answers
2k views

Time no longer passes except near intelligent creatures, how does the world continue?

Time stops nearly everywhere, time only continues in a area around creatures of a certain intelligence. The worlds population is suddenly thrown into darkness as time ceases throughout the universe ...
8
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2answers
1k views

What traits should we expect from religion in the presence of time loops

Last month Mobius asked a question about a world where time can flow both forward and backward. I suggested a particular solution to the problem he was looking at, and I would like to open up a ...
0
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5answers
694 views

What should I fear/consider if someone asked me today to put me on hibernation and set the time to wake me up 2000 years from now? [closed]

The idea sounds very acceptable to me. Assuming that I'll be n a secure place and the machine would not malfunction and I would wake up at 4015. Anything I should be worried about before saying yes?
17
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5answers
3k views

Can I significantly shorten the days on a planet that can support human life?

I would like to have a world on which humans can live unaided -- they can breathe, the climate is workable, they can eat the local vegetation, etc -- but on which a complete day is substantially ...
5
votes
1answer
275 views

A Perception Of Time

I think my question is best illustrated by this English idiom: A watched pot never boils. Or alternatively, if you've been in school I'm sure you know what I mean. Recess and lunch fly by way too ...
14
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5answers
2k views

Can you build a relativistic clock?

Is it possible to build a clock that will be immune to relativistic effects on the passage of time? Can a clock exist that will always display the time of the place in which it was set? For instance, ...
9
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3answers
636 views

The Great Time War

For those not familiar with the TV Show Dr Who, the main protagonist is an alien from the planet Gallifrey. They built your typical highly evolved society which mastered the secrets of the time and in ...
25
votes
18answers
6k views

An immortal's measurement of time

A while ago I created a species of immortals that has existed since shortly (astronomically speaking) after the formation of the known universe. I've mostly ignored their society in the meantime as ...
4
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4answers
1k views

How long is a “day” in intergalactic space?

Imagine a human colony with the concept of an Earth day being transported somehow into the deep, deep space between galaxies. As we know, gravity wells affect the relative passage of time. So, in ...
4
votes
5answers
403 views

How do merpeople track time undersea?

Suppose in the early stage of the merpeople civilization, languages are at its infancy and they have just started agriculture. We all know that calender and clock are very important for early farmers ...
6
votes
3answers
680 views

Would we count years if we had no seasons? [duplicate]

Suppose a civilisation on a moonless planet that is in an orbit with so little inclination and so circular that there are no noticeable seasons anywhere on the planet. An alemna would be just a ...
13
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6answers
3k views

How to exploit a groundhog's day loop to do the most good? [closed]

I actually had been thinking of posting a groundhogs day question the same day that Tomorrow is Groundhog Day... For everyone. How does society respond? was first posted ironically, it's a sign! In ...
6
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7answers
2k views

What is the smallest action required to destroy all of reality? [closed]

Scenario: The most feared evil scientist in the world, Sinister Norman Van Deathtoyou, is on a mission to destroy everything. Humans, Earth, The Universe, even the very fabric of space and time. But, ...
7
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2answers
808 views

Robbing the world of 1 second

Scenario Set in modern day Antarctica, a group of very talented scientists are working on a highly confidential scientific experiment which would one day allow us to manipulate time literally. They ...
59
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11answers
11k views

How Would a Post-Planetary Civilization Measure Time?

Our perception of time is steeped in the rhythms of our world, and blended with the most ancient of superstitions, decrees and mathematical conveniences. Thus we have days that track our world's ...
12
votes
8answers
2k views

How would a medieval person notice that they've traveled back in time?

How would a Renaissance-era shopkeeper, in a walled and paved city, notice that they've traveled back in time, right when they wake up, or soon after, like after 5 min and looking outside? No dead ...
4
votes
3answers
385 views

Racing Around the Edge of a Black Hole

I am trying to understand the physics of an interstellar race. Say two ships are racing past a black hole as if it were a corner on a race track. One of the ships takes a hard line and comes very ...
3
votes
11answers
431 views

How do you capture this magical critter?

[Critter's descriptions] (D1) appearance closely resembles a cat (D2) no bigger than a dog (D3) toothless (D4) strange claws to climb any surfaces (D5) powerful hind legs can sprint like a cheetah (...
26
votes
12answers
5k views

How might one create a room in which time flows faster?

And what would be needed to expand this effect, scaling up to the size of a city, or maybe a country? I've seen this question, and it seems that while one could do it with gravity, the effectiveness ...
2
votes
1answer
535 views

By how much exactly would the time flow be slown down inside a gravity room?

A super alien warrior goes training inside a gravity room. It's a room with a flat floor, but the surface gravity of the room can be modified at the push of a button. But under general relativity a ...
39
votes
13answers
9k views

What Time is it IN SPACE?

So, let's assume you've cobbled together an interplanetary empire without using transportation methods that violate causality or have the power to blow up stars. You may feel pretty proud of yourself, ...
4
votes
1answer
204 views

Explanation for the creation/existence of a secondary physical space that experiences time differently

In this world I'm building, I need it to be possible to have enclosed spaces/worlds connected to the main one. Ideally the main world would closely resemble ours, with the same laws of energy/physics/...
59
votes
27answers
12k views

How to Defeat a Precognitive Warrior? [closed]

My hapless wanderer (let's call her Alice) escaped the Wold forest only to stumble upon a large, featureless and dusty plane, at the center of which lies Castle Morrow, a fort populated by mechanical ...
15
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2answers
2k views

How would common time-travel affect a language?

In most languages, the linear concept of time has led to similar concepts of past/present/future. Now, suppose that we have a human or human-like society in which time travel is fairly common, and it ...
12
votes
3answers
523 views

Can a planet's moon rise at the same time every night?

Is it possible for a planet's moon to always rise at the same time of the night? And in this way be used as a timekeeping device? What if there are two moons?
10
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10answers
915 views

What is the ideal time period for 'forgotten history' novels/stories to take place and still end up with our history?

In novels (SF and FF) that hint at being earlier in Earth's history, such as Lord of the Rings and The Wheel of Time, in which period would such a story need to take place to plausibly and ...
11
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4answers
1k views

Universe-wide time system

Is there a time system that two spacecraft traveling in different galaxies could share? For example, a spacecraft jumps to an unknown location in the universe, far away. How could they synchronize? ...
50
votes
21answers
8k views

A small group recreating modern technology

Suppose a group of people get transported back in time (say 2500 years). Then, in a manner reminiscent of A Connecticut Yankee in King Arthur's Court, they try to re-design modern technology. Assume ...