Implicating sunlight → day
Link to implication

Reason:

It only effectively happens during daytime, also it is a pretty good indicator of daytime in indoors.

Related implications:

• sunny → day.

• sunbathing → day.¹

• blue_sky → day.²

Related aliases:

• sunshine → sunlight.
• sunbeam → sunlight.
• sun_rays → sunlight.
• sunrays → sunlight.³
• sun_light → sunlight.³

• sunny_day → sunny.³

• sun_bathing → sunbathing.³

¹ Action only realizable at certain period of the day, being impossible during night, sunrise, or sunset.

² Term used for the daytime Earth's sky when it is clearly (but not necessarily fully) visible.

³ Not very tagged at the moment, but might worth aliasing.

Note 1: sunset and sunrise technically are part in daytime and part in nighttime.

Note 2: sun rays only happen within an atmosphere, hence space is mostly excluded.

EDIT: The tag implication sunlight -> day (forum #237105) has been rejected by @NotMeNotYou.

It can still be drawn in space, realistic or not

Fenrick said:
It can still be drawn in space, realistic or not

I checked before and we apparently haven't precedents. Also 'day' and 'night' technically are applicable on space (if a body is being irradiated mostly by a specific star or conjunct of them, then its illuminated part is its day).

Fenrick said:
It can still be drawn in space, realistic or not

A greenhouse could exist on a space station. Glass wouldn't be super safe to have, but there are safer variants that would let sunlight through. Just because current space gardens are entirely interior doesn't mean they always have to be.

What about the sun while in space? Not like an artificially-lit area. The sun. As in, not another body. Just the sun.

Does there have to be a sun for it to be a day?

the moon

DelurC said:
Does there have to be a sun for it to be a day?

implications are one-way. A always includes B, but B may be present without A.

kamimatsu said:
What about the sun while in space? Not like an artificially-lit area. The sun. As in, not another body. Just the sun.

Exactly. Sunlight actually shining into a location doesn't make it day--if you're on a space station, your days are likely different from the rotation of the station.

kamimatsu said:
What about the sun while in space? Not like an artificially-lit area. The sun. As in, not another body. Just the sun.

That is why I don't suggested implying 'sun' to 'day'.

The 'sunlight' tag isn't literally for light from the Sun (it would practically be synonymous of 'day' if it would) it is form noticeable sun rays.

e.g. post #1140239

If a image portrays the Sun in space, in such way that sun rays are visible, would be fine tagging it as 'day' since the image would be replicating how the sun is seen at daytime.

DelurC said:
Does there have to be a sun for it to be a day?

For 'day' in the sense we are discussing, yes (however not needing to be directly visible).

Furrin_Gok said:
Exactly. Sunlight actually shining into a location doesn't make it day--if you're on a space station, your days are likely different from the rotation of the station.

Actually it makes. 'Day' (in the sence we are discussing) is the direct incidence of sunlight; it is valid for any kind of satellites regardless the size, rotation or origin.

The days and nights in Mercury are really different from ours, but are still day and night.

O16 said:
That is why I don't suggested implying sun to day.

The 'sunlight' tag isn't literally for light from the Sun (it would practically be synonymous of 'day' if it would) it is form noticeable sun rays.

e.g. post #1140239

If a image portrays the Sun in space, in such way that sun rays are visible, would be fine tagging it as 'day' since the image would be replicating how the sun is seen at daytime.

For 'day' in the sense we are discussing, yes (however not needing to be directly visible).

And how do we know it's not bright moonlight? Technically, moonlight is just reflected sunlight, so that tag is not wrong.

Furrin_Gok said:
And how do we know it's not bright moonlight? Technically, moonlight is just reflected sunlight, so that tag is not wrong.

The lunar regolith hasn't a degree of reflection that high; this made moonlight and sunlight quite distinguishable.

O16 said:
The lunar regolith hasn't a degree of reflection that high; this made moonlight and sunlight quite distinguishable.

Bright Moonlight. Just because our moon can't reflect it that brightly doesn't mean another planet's moon cannot.

Furrin_Gok said:
Bright Moonlight. Just because our moon can't reflect it that brightly doesn't mean another planet's moon cannot.

If the moon reflects so brightly, "its" light would simulate a day, so the post should be tagged as such by TWYS. The idea of a moon showing up during the day isn't so uncommon after all.

Furrin_Gok said:
And how do we know it's not bright moonlight? Technically, moonlight is just reflected sunlight, so that tag is not wrong.

Not that its a absolute constant thing just thought itd still be worth pointing out; moonlight tends to be portrayed in "cold"(blues, greens, certain purple tones) light while sunlight is portrayed in "warm"(yellows and reds) light...

Furrin_Gok said:
And how do we know it's not bright moonlight? Technically, moonlight is just reflected sunlight, so that tag is not wrong.

How do we know that particular moon is reflecting from it's planet's star? While it might be safe to assume that for Luna, not every moon is Luna.

The sun shines in the dusk and the dawn. No.

What about artificial stars (suns)?

What is a day anyway. In some places, there is no "night" so how can there be "day" (For example : There is that one guy with salary of 100k$ everyone else has 100$ so you are poor and he is rich, however if everyone has 100$ there is no poor or rich, everyone is average, there can't be one without the other)

You can simulate this effect with a really strong spotlight or something, so there's no guarantee that light is coming from the sun.

DelurC said:
What is a day anyway. In some places, there is no "night" so how can there be "day".

A day is the amount of time it takes for a celestial body to rotate on its axis. The "day" portion of that is the time spent exposed to sunlight. It is theoretically possible for a planet to have one half always day and the other half always night if it rotates and orbits its star in exactly the right way. I don't know if there are any that actually do this, though.

DelurC said:
What about artificial stars (suns)?

What is a day anyway. In some places, there is no "night" so how can there be "day" (For example : There is that one guy with salary of 100k$ everyone else has 100$ so you are poor and he is rich, however if everyone has 100$ there is no poor or rich, everyone is average, there can't be one without the other)

How would you tell the difference between a real and artificial star in regards to TWYS thou?

There is also such a thing as perpetual night or perpetual day, rogue planets that have no sun are for example often referred in fiction as having or being shrouded in a perpetual night. Similar also exists on earth in the form of the midnight sun or polar night that each can last around 6 months but the 24 hours of each increment in a month of that time still get referred as day and night themselves bacause day and night refer to time(specifically in regards to the spin of the earth around its own axis), not light. Thats why there would still be a concept of day and night on a spaceship. Day and Night will always exist were ever time is read. Time would have to cease to exist to fulfill your comparison.

Demesejha said:
The sun shines in the dusk and the dawn. No.

Repeating:

"Note 1: sunset and sunrise technically are part in daytime and part in nighttime."

BlueDingo said:
You can simulate this effect with a really strong spotlight or something, so there's no guarantee that light is coming from the sun.

The 'sunlight' tag shouldn't be used if the light rays don't appear to come from Sun. If a unseen element mimics so convincingly sunlight, then it should be considered sunlight by TWYS.

The principle of "we can't guarantee" is applicable to barely everything, example: I should stop using 'treasure_chest' because can't guarantee that what I am seeing isn't actually a mimic.

BlueDingo said:
A day is the amount of time it takes for a celestial body to rotate on its axis. The "day" portion of that is the time spent exposed to sunlight.

The word 'day' has more than one meaning:

I) The one you firstly described.

II) 'daytime', the period in which the star(s) is/are visible from certain point of a stellar satellite's surface.

III) The directly illuminated portion of a stellar satellite or body submitted to the bright of a specific star (or conjunct of them).

Note: the first meaning isn't useful from tagging point and the other two overlap in many stances.

BlueDingo said:
It is theoretically possible for a planet to have one half always day and the other half always night if it rotates and orbits its star in exactly the right way. I don't know if there are any that actually do this, though.

Mercury.

Note: not actually, but is the closest example that comes to my mind.

DelurC said:
What about artificial stars (suns)?

What is a day anyway. In some places, there is no "night" so how can there be "day" (For example : There is that one guy with salary of 100k$ everyone else has 100$ so you are poor and he is rich, however if everyone has 100$ there is no poor or rich, everyone is average, there can't be one without the other)

Then it's daytime when you face them, like any star. It would look the same, and we tag what we see

You are also confusing daytime with day. One is a yes or no question. The other is an amount of time.

DelurC said:

What is a day anyway. In some places, there is no "night" so how can there be "day".

As I said, the word 'day' has more than one meaning:

I) The one that BlueDingo already described.

II) 'daytime', the period in which the star(s) is/are visible from certain point of a stellar satellite's surface.

III) The directly illuminated portion of a stellar satellite or body submitted to the bright of a specific star (or conjunct of them).

Also, there is no place on Earth with such characteristic.
Some places at high latitudes have two events called 'midnight Sun' and 'midday Moon'; the former is a daytime period with duration of days, weeks or even months and happens during the summer, the latter is a nighttime period with duration of days, weeks or even months and happens during the winter.

The tag implication sunlight -> day (forum #237105) has been rejected by @NotMeNotYou.