Questions tagged [time-keeping]

For questions about systems used to distribute time into certain periods adapted to the purposes of common life, as hours, days, weeks, months, years, etc.

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Navigation and time-keeping on a slow spinning planet

I'm working on a story set on a planet that spins very slowly. Days and nights last years, and since it's either scorching hot or freezing cold, people, animals and all living beings must travel ...
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3 votes
3 answers
226 views

How fast and how coarse does a sandstorm need to be to sand a human down to nothing in the span of an hour?

I am designing a world with extreme weather, which uses human survivability as a measure of time. I've equated something close to an hour for the time I am using, for simplicity's sake, but this poses ...
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5 votes
4 answers
1k views

How can a mechanical clock be powered by wind in a reliable, constant way?

Picking up the context This is a follow-up question to the technologically accurate watermill clock, available here. In this case, we're not using water to make clocks, but wind! Wind will be the ...
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4 votes
4 answers
181 views

How can I make a technologically correct horizontal watermill clock?

Context As I was working on some mechanical ideas (and practicing art), I wanted to see how to render time in creative ways. So I decided to make an horizontal watermill akin to a turbine, which has ...
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  • 4,399
5 votes
3 answers
120 views

Would an extra-terrestrial human settlement rely on their endogenous or environmental rhythmic cycles to set their routines?

Setting: We have settled a planet with days and years not even approximately like earth. The settlers must decide what their workday is and their week, year, etc. Premise: Colonists will establish ...
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5 votes
11 answers
425 views

Awaken after millions of years of spacetravel, what day is today, what time it is and to where should I look at? [closed]

Bob is a 30 years old man who has a religion, called Bobism that is a particular blend of Judaism, Islamism, Christianism, Buddhism, Madeupism and Wtfism. Bob is a strict rigorous practizer of Bobism. ...
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12 votes
8 answers
2k views

How would an underground society measure time? [duplicate]

I have a very mind-boggling question about time reckoning. I have a race of Dwarves, that at the very beginning of their history lived only underground and were forbidden to reach the surface. They ...
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12 votes
15 answers
3k views

How do Time Keepers log their diaries?

Set in distant future, a group of super advance civilization formed a special task force to observe and guard timelines, and they are called Time Keepers. The Time Keepers will scan for spacetime ...
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2 votes
8 answers
536 views

Time keeping across several star systems [duplicate]

I'm working on a storyline where humanity has spread across a handful of star systems via a device that basically teleports a ship from one system to the next. I have worked out some scientifically ...
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2 votes
1 answer
131 views

How Should I Make a Calendar for Trappist-1

Alright, so I have already asked a few questions about this system, but this is the most important one. Firstly, I am needing to see if I got a relatively simple math problem right, and then I need ...
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6 votes
5 answers
392 views

underwater calendar for merfolk?

In the world I'm creating, I have merfolk who have human-level intelligence, live in pods/tribes of 10-50 (but are connected to each other and trade and exchange information frequently). Most worship ...
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2 votes
5 answers
258 views

Would Moons of a gas giant appear to phase when looking at them from another, tidally-locked Moon?

I'm designing a fantasy world on a tidally-locked moon of a gas giant. Because it's primarily a medieval fantasy set on the outward-facing side of the home moon, I'd like to keep units of time similar ...
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-1 votes
4 answers
264 views

What percentage of teleporters would a world with teleportation need, before timezones are required?

"Arrive at 3pm" "Wait, is that 3pm your time, my time or the destination time?" "Destination time, it's when the Wizard bar opens at hub-city" "When is that for me?&...
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-3 votes
1 answer
62 views

Does anyone know how I can convert the time of my conworld into earth hours/days and vice versa? Is there a converter or formula I could use? [closed]

I try to find out how long the years/days/hours in my conworld would be compared to those of Earth. So here is some information about the conworld's time measures: 100 (earth)seconds = 1 (conworld)...
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0 votes
6 answers
287 views

In what way could a moon change phases according to the month?

Let’s say that a planet has multiple moons, and because I don’t want to type “a planet” many times, let’s call the planet Stan. One of these moons changes phase (“phase” being the best word for it, ...
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7 votes
4 answers
391 views

Synchronized Galactic Timekeeping [duplicate]

I have some ideas for how to synchronize a galactic time system given the constraints of modern physics. However, my understanding of relativity is pretty limited so I was hoping for feedback or ...
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4 votes
3 answers
145 views

Calendar with seven magical moons

My magic system is dependent on the moons; whichever moons are in the sky dictates what magic you can use, so the moons and their places in the sky are very important. The problem is, there are seven ...
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35 votes
20 answers
6k views

My planet has a long period orbit. How can I make the seasons change faster in order to shorten the length of a calendar year on it?

I wanted a habitable planet around a binary star system, so I conjured up a system that let me have one. The problem that I'm facing is that the goldilocks orbital parameters for this planed ended up ...
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4 votes
5 answers
1k views

Chaotic World: Calendar and Events

Environment There exists a strange dimension called the Margins of Reality. All supernatural things in the world come from here and are caused by what the natives call "Margin Spirits." In ...
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5 votes
6 answers
219 views

How would a civilization of cave-dwelling cats track dates? [duplicate]

I am in a slight dilemma. I have a civilization of cave-dwelling cats, that has been mentioned in numerous questions before this one. They have human intelligence, and they don't leave the caves. I ...
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0 votes
0 answers
42 views

Single Time Zone in a Galaxy [duplicate]

This follows up the Single Time Zone on a spherical planet. Suppose now we have many habitual planets in a Solar system or in a Galaxy. How does it work to set up a Universal Time? Will it be ...
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23 votes
11 answers
5k views

Martians want to keep their weeks roughly in sync with Earth. How would they do that?

The Martian Sol is 24 hours and 37 minutes long, so daytime at a fixed point on the planet's surface will drift in and out of sync with a fixed point on Earth's surface, and keeping the tradition of a ...
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1 vote
3 answers
545 views

How to calculate the time on planet B for an event that happened on planet A?

We have had a number of "universal time" questions on this site — basically the various OPs have been looking for a way to establish a single time reference for the galaxy. I believe that's ...
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21 votes
13 answers
3k views

What reason would an extraterrestrial civilization have to adopt Earth's time measurement units?

I'm developing a game that mostly takes place in a universe different from Earth's. In fact, the game has many other universes as well, each with different date/time systems (as opposed to Earth's ...
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4 votes
2 answers
132 views

Starting the year with september equinox

I know of several historical and fictional traditions which use spring equinox as a way to sync their calendars with the solar year, starting a new year on (or around) March 20. Are there are any ...
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6 votes
3 answers
701 views

Timeline Building Tool/Software for parallel timelines

This is my first post on this site. I have done some searching here and elsewhere and was unable to find an answer, so here goes: I'm working on a story that exists both in real-world Earth and a ...
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5 votes
1 answer
395 views

Is there a website that will allow me to create a fictional calendar?

Is there a website that will allow me to create a fictional calendar? I have already created the actual system, named the months, days of the week, and so on, but I would like to create an actual ...
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4 votes
1 answer
148 views

How can I calculate and create a calendar for one of 4 moons of a Jupiter-like planet?

The planetary system I'm creating is a large Jupiter-like planet with four moons. I've based them on the Galilean moons. The story initially takes place on the outer most moon. The magic system ...
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3 votes
2 answers
70 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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4 votes
6 answers
406 views

Would a civilization living on a planet without a moon still come up with the concept of months?

We divide the year into months of ~30 days because that’s roughly the period of the moon, adapted to fit a solar year. However, would a civilization living on a world with no moon but a year of ~365 ...
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1 vote
1 answer
87 views

Lifespan of Plutonians [closed]

Honestly, I think my questions about a fictional Pluto are by far the interesting to me, so I have another question. Now that I’ve got my humanoids pinned down, and what protects them from the cold, ...
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8 votes
5 answers
1k views

An alien race without the concept of "time"

In my narrative I have these aliens that don't experience time, they don't remember and don't predict events, which makes them completely reactionary. This is supposed to make them alien and difficult ...
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8 votes
4 answers
274 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 ...
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1 vote
3 answers
201 views

time precision of system logs

All, As part of an SF writing project, I would like information on the accuracy of computer system logs, worldwide. One could think of a global map that had a tiny dot for every computer or phone ...
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1 vote
2 answers
230 views

How can I do so that the four seasons last six months instead of three months?

In the real world, each season (Spring, Summer, Autumn and Winter) lasts three months. In my fictional world, I would want to make sure that each of these seasons will last six months. What I want ...
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5 votes
7 answers
684 views

Universal calendar creation for intergalactic empire [duplicate]

In my novel, I have created an intergalactic empire that predates humanity by millions of years. The only system I am having a difficult time creating, for this empire, is a Calendar system that ...
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14 votes
7 answers
9k views

How would timezones work on a planet 100 times the size of our Earth

I thought the answer would be simple and maybe it is, but it's just rattling my brain. If there was a planet 100 times the circumference of Earth, assuming everything is similar to Earth, 1 day (1 ...
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4 votes
2 answers
208 views

Born and raised on a world with longer days and years - would it impact life expectancy

If humans found a habitable world and access to it, what would the effects be of a longer day to those who were subsequently born and raised there? Is there any evidence that a longer day cycle (of ...
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  • 513
7 votes
3 answers
902 views

What's the overlapping calendar of two different lunar cycles

In My world of PD there are two distinct moons, Aurie is a big cream colored moon on a 32 day cycle and Chi is a smaller rust- colored moon on a 20 day cycle. Can somebody help me figure out how often ...
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2 votes
0 answers
167 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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-2 votes
3 answers
198 views

How could someone dismantle Mother's Day in the United States? [closed]

Anna Jarvis was the founder of Mother's Day in the United States. Ironically, she spent the rest of her life trying to dismantle it because she felt it was too commercialized. Her efforts failed, so ...
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4 votes
2 answers
223 views

What cultural nuances and customs might a medieval, largely agrarian society with a strict caste system have?

I apologize in advance, because this will be pretty long. I already have a vague idea of some customs, so I need to include both the sociopolitical aspects of this as well as those customs. The ...
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15 votes
5 answers
2k views

What calendar would the Saturn nation use?

In my next novel, there are three major powers in the solar system: Earth, Mars, and Saturn. Earth runs on a slightly modified Gregorian calendar, Mars goes with the good old Darian calendar, and ...
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6 votes
9 answers
847 views

A Roman-technology clock run by slaves - how to make it accurate

In a land similar to the Roman Empire, slaves are used to drive machinery. Mostly this is a matter of getting them to pull carts or wind handles. The Emperor wants a clock that is accurate to the ...
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33 votes
11 answers
6k views

What's an astronomical event which happened about 10,000 years ago, which humans could have noticed?

Bob is older than he looks. Specifically, even though Bob looks like he's in his twenties or thirties (it's hard to tell), he was actually born in Europe about ten thousand years ago, long before the ...
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13 votes
5 answers
2k views

What would the current period of history be called in the future? [closed]

In my SciFi book, 400 years from now, humanity has expanded throughout the solar system and managed to survive the death Earth. In their history, Earth fell during the third world war in 2093 CE and ...
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9 votes
9 answers
2k views

Explanations for a Uniform calendar in most of the world

I have a very fragmented world, composed of different kingdoms/nations most of which have no connections with the others. How can I explain the adoption of the same calendar (or metric system for that ...
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  • 273
0 votes
4 answers
173 views

What would our calendars be like with no astronomical cycles? [duplicate]

What would calendars and our concept of time be like if there were no astronomical cues? If we lived in perpetual daylight and perpetual summer. The Sun, Moon, and stars are all fixed in the sky. ...
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6 votes
2 answers
131 views

How to distinguish the different phases of the day when the sun rises and sets multiple times?

Obviously there would be a lot of small (not to mention a couple large) changes humans would need to get used to on a planet that rotates much faster than Earth. The biggest one I’m concerned about ...
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  • 1,005
6 votes
3 answers
263 views

How far can civilization go without inventing the calendar?

While only counting seasons and years, but not weeks or months, how far can human civilization progress? Can they reach the middle ages? Or is the invention of the calendar such a cornerstone of ...
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