As the Reader is doubtlessly aware, the world in which we live in has no fixed state of weather. Wind, sun, rain and such come and go. Seasons change, different regions of the steppes have different ways to tell passing time, but also have wildly different names.
Summer, the default way everyone counts their Age and passing of time, is called: Lato, Leto, Lětom, Лєто. Leto is also a part of a season, commonly referred to as the warmer time.
An important note: Age is counted in Letos, but that is just a name the age is given in. A new leto considers itself to begin during the period around Marenna's Drowning, but Westerners and those of the Corner swap Leto for a Vesna (the regional name for Sunrise/Zorya, a time of bloom and life).
By most standards, a leto consists of 11 to 12 parts, individually called a ''moon''/''miesiąc''/''księżyc'' due to the fact that the moon completes its cycle from New to Full during that time. It tends to be measured as a 28 to 32 day period, for there are exceptions and regional differences. Measuring like that is not common for those who have no interest in farming and tending to animals, so the rest of us loosely divide based on common weather patterns and temperature.
As by accounts of the Griffians, a leto is divided into 11 parts (called a ''miśicь'', plural ''miśice'').
Middle-to-south Sarmats divide into seven parts (''miesięce''), from which two are optional and used only for specific regions.
Westerners talk about eight parts (further divided into two: Nattleys and Skammdegi), in which they consistently align with the solar cycles. This creates a drift, so every 7th summer cycle a seven-day period is added (it is called Sumarauki).
Southerners from near the Baikal lake consider a leto to be divided into three, the warm-snow, cold-snow and no-snow parts. The divide is somewhat humorous but it flows better when spoken in their tongue.
The above incomplete observation catalogues that different lenghts of Long Night affects the naming and lenght of seasons. More parts seem to be noted in warmer climates, less parts in colder climates, and more accented and abrupt is the divide between hot and cold in the latter.
The horizontal line above resuply-water (for which I have chosen to mark Svitanye with) is Marenna's Drowning: almost universally considered a beginning of a new leto. The colored space above it (when moving clockwise) is a period commonly considered wet-raining, with drastically changing weather. During that time, there is a shortest night of the leto, and a celebration of beginning of Zenit (Season of Lindens). Raroh is also celebrated during that day: it is a day of frendships and celebrations of thereof.
The almost half of the wheel, as marked by a ''moving'' symbol bove the line near the border, is the ''Warm'' half: Zenit, or Noon part of the day that is Leto. A time of life, travelling and everything moving.
Another line, marked stop-fire, is called a lot of different names, beginning with Furnace, Smelter, Long Day and, for those romantically inclined, a day of Love. It is one of the hugest celebrations a tank can attend: creations of groups, flanks and setting bases is lucky during that day. It is also popular to be Marked, or attempted to be, on that day.
A long tradition regarding the shortest night of the all seasons is searching for a Fern Flower: myths regard it as either a fallen part of the moon, or a flower grown out of pure sunlight. Grants wisdom or any wish to the finder. The tradition differs for artillery-framed (and, weirdly enough, a common number of trains), as they search for a Fern Flower (Perkun's Flower?) which bursts from the ground after a lightning strike.