The sixth planet of this system is an Earth-Like World that has a -85º axial tilt, almost -90º. This kind of planet features unique day-night and seasonal cycles.

During the solstices:

• The sun is directly overhead one of the poles. And the equator sees a continuous sunset (or sunrise), with the sun being stationary.

During the equinoxes:

• The equator sees half day, half night, with the sun directly overhead at noon. The poles see a continuous sunset (or sunrise), with the sun moving 360 degrees around the horizon.

In between the solstices and equinoxes:

• At the poles, just after equinox the sun either moves below the horizon or starts circling further above the horizon, until it reaches directly overhead at solstice.

• At the equator, the sun, which was stationary at solstice, starts to make progressively larger circles (dipping below the horizon half the time). The circle expands moving progressively along the sky (crossing the midpoint at equinox). Then begins contracting on the other side after the solstice, until it reaches the other end of the sky at the next solstice and is stationary that day.

In summary:

• Both poles have half a year of daytime and half of nighttime. However, during solstices the sun is directly overhead one of the poles while there is a full night at the other, unlike in Earth, in which the maximum elevation of the sun at the poles is ±23.4° (the Earth's axial tilt).

• At the equator, days always last for a rotation of the planet (0.9 Earth days), but the elevation of the sun changes from just over the horizon during solstices to being overhead at noon during equinoxes.

This planet presents a mystery to planetologists and climatologists, as it is sure that its climate is as unique as its cycles. From space, we can see that its poles have large ice caps while the equator is full of water and life, implying that the equator is hotter than the poles.

The name of the planet makes reference to the planet looking like a white-blue-black tricolor flag during solstices.

This system was a winning entry in the 3307 Tourist Beacon Contest. Link.

Reference: Link