Never.
They say that on that day all the planets will align with the sun and a meteor will go through all the planets including the sun
Rotational time of the planets is random (the length of the planet's day), but the outer planets do spin faster than the inner planets.
If it's a good day and the planets are aligned you might get by with a hundred dollars at the local alignment shop. Well, it works on mine, anyway.
The outer planets all rotate faster than the inner planets. Each of them has a rotational period shorter than an Earth day. All of the inner planets have rotational periods longer than one Earth day. The outer planets are mostly made up of hydrogen, helim, and ice, and they are much larger than the inner planets which are mostly iron and various types of rock.
We use the word "day" to indicate the time between sunrises. On Earth, the "day" is 24 hours. Planets that rotate more rapidly have shorter days, while planets that rotate slowly have longer days.
The luminosity of the sky makes the planets undetectable. The Moon however can often be seen in the daytime because it's so bright.
planets have moons for day and night
what is meant by a planets day
Mars rotates in about the same time on it's axis, so it has a similar day length of 24 hr and 38 min.
A planets day (solar day) is the time it takes to rotate once on its axis relative to the sun, the synodic period. A year on a planet is the time taken for the planet travel once around the sun.
Which planet?
The light of the sun is too bright to make out the planets during the day unless there is an eclipse.