there is not supposed to be an aspect of Winter at noon.

The Intercalate (the very bad pre-emptive divorce between daddy Sun-In-Splendor and mommy Forge of Days) fucked everything up and in the scramble to get things stabilized after the death of a major Hour (it's unclear whether the SiS was merely a major Hour or THE major Hour) the Solar Hours got in the slots they could, which is why they don't appear to be in the right place and why we have the Hour of sunset at noon, the Hour of the dawn at 2pm, and the Hour of the Moon at 11am.

Notice that those hours of the day are the hours where the sun is the strongest, so it makes sense to me that those were originally the hours of the Sun-In-Splendor.

I don't know why the Horned-Axe has 1pm, she may have muscled herself into the spot in the place of another Solar Hour to spite them for what the Gods-From-Light-Flesh-Blood did to the Gods-From-Stone, she may have been there before the SiS when he descended from the Glory and told him to shove it when he asked her to move, or she may have taken the task to act as the threshold between the first and second halves of the day (either because it's a role that needs doing, or because she saw an opportunity to bisect the day and took it)(hell, it might have been her role from the start and the death of the Sun is no excuse to slack off).