Talk:Twilight

Why 6° increments?

It seems to me that there ought to be an explanation for this on the page. JanGB (talk) 10:29, 6 November 2023 (UTC)

Astronomical twilight: Descriptions vs. images

The various images for astronomical twilight don't seem to match the description. The description seems to imply that it is "basically fully dark", differing from true night-time only in that some of the very faintest phenomena will be hidden. But the images seem to be showing a much brighter sky. I'm particularly suspicious of the "Astronomical twilight in Goa" pic in the gallery, as the actual description of the picture doesn't say anything specifically about astronomical twilight. In fact, the description of the pic says that it was taken at 12 January 2011, 18:43:18, which according to this calculator should be after twilight has ended, so I would expect the sky to be even darker. Am I misinterpreting something, or are the pictures and/or their descriptions incorrect? Iapetus (talk) 15:43, 15 November 2021 (UTC)

Image in the section "Astronomical twilight"

I'm suspicious of the second image (at right) at the "Astronomical twilight" section. It appears to be an underexposed photograph of a civil twilight rather than an astronomical twilight, especially because no stars can be seen and because of the distinct colours. Should the photo be moved to the correct section or even removed altogether? Dsuke1998AEOS (talk) 17:01, 12 April 2023 (UTC)

I've decided to remove the image. Dsuke1998AEOS (talk) 17:30, 19 April 2023 (UTC)

Simple approximation?

It would seem appropriate to include the approximation that the twilight time is inversely proportionate to the cosine of the latitude (e.g. civil twilight =~ 24min/ cos LAT = 48min @ 60degrees). Or am I missing something? JdelaF (talk) 21:39, 14 May 2024 (UTC)