Solstice to solstice, every light the year gives.

Read it like an almanac. In the thin months the light is pale and the shadows go blue, and Winter Pale keeps them that way. Polar Summer holds the snow under a flat continuous daylight. Spring Green pulls the new yellow leaf toward green and lifts the shade. Summer Heavy keeps the saturation only in the leaf under hard light. Autumn Road deepens the reds, cuts the greens and stops the browns from going flat.

The day has its own hours. First Light separates land from sky by tone alone, with no gold invented. Morning Rise puts early sun down one side and holds the shadow cool. High Noon recovers clipped whites and gives empty shadows detail; Hard Sun pulls the glare and opens the shade. Last Warmth is a two-temperature grade, amber on the lit top and blue below. High Latitude is the low northern beam against sky-lit shade.

Most days are grey, so the overcast collections run as a ladder. Cloud Cover is cool and documentary. Closed Sky steps one rescue up in strength, member by member, from a thin veil to a low ceiling. Grey Weather warms the highlights for wet streets. Monsoon Grey keeps the sky as the dark bright thing. Open Sky warms the blue-grey cast off skin in open shade; Temperate Coast opens the greens under maritime cloud. Sea Fog and Storm Front are the far ends, mist kept soft and a squall carved from grey. Altitude and distance close the trail: Alpine Air cuts the haze and deepens the sky, Continental Dry and Desert Light take the hard inland and arid light, Salt Flat keeps the pan white, Steppe Wide keeps straw straw, Drone Overhead makes the top-down pattern graphic, Afternoon Lean is dusty low sun on the farm track.

Not on this trail: the exclusive land and weather sets, Highland Thin, Snow Field, Rain Glass, Tropical Humid and Blossom Drift, each sold on one specialist page only. All-Weather Light and Land and Light are the smaller packs of the same country; this library is the whole year.