Due to the fact that this work is a purely literary creation, set in a completely unknown era devoid of any sciences, customs, cultures, or religions rooted from the beginning in civilizations known to man up to the contemporary world, it became necessary and essential to create a unique and peculiar calendar that would satisfy the myths, traditions, and gods inherent to those Eras and Times. It is extremely important to emphasize that the Ernt-nador Calendar, the Known World Calendar, was entirely written in the ancient language called Idhilion, the language of the gods of Anahkólion who lived in Mount Naumathar. Some peoples of Ernt-nador, descendants of the Lineages of Anahkólion, mistakenly believe that the language originated in Ernthys and also attribute its origin to the wizard Yondar. However, the language arose long before the First Era of Anahkólion, and Yondar himself is also from there. This confusion is attributed to the passage of time throughout the Eras, causing many facts to be discredited and becoming legends and myths without any credibility. The Ernt-nador Calendar, or the Known World Calendar, as it was called by some peoples, was formulated in Wol-kunt with the participation of Yondar, the Master of Wizards, and several scholars of the stars, along with Kolir, the king of Khiurthi - now Thiurethi. This occurred in the Time of Kings but for many, it was used shortly before the halfway point of the Time of Goddesses, after the Time of Shadows. This was due to the need for a more accurate time measurement in days, rather than the observation of the four lunar phases, as it had been done for a while after the counting of Winter and Summer Cycles was abolished. It is worth noting that the counting of the Cycles in Anahkólion was very different from that in Ernt-nador. In Anahkólion, a Cycle lasted for about 19 months, with approximately two-thirds and a bit of winter, while in Ernt-nador, 14 months and some days were counted, with half winter and half summer. This fact is due to the fact that Anahkólion is located further to the south. After spending years observing and studying the moons more deeply, Yondar realized that they had cycles and changed, mostly every seven days on average. Of course, there were slight variations, but he chose to disregard them as they were too small. He also observed, over the years previously counted by the twelve lunar phases, that the temporal cycles, which divided the seasons of the year, restarted after a period of approximately 363 to 366 days. After discovering the approximate number of days necessary for the repetition of lunar cycles, information considered of vital importance for the formal construction of the year, Yondar began to consider the question of dividing this period. As the moons changed approximately every seven or eight days, with some variations depending on their phase, Yondar decided that the initial total number for the month would be, as in the Time of Goddesses, 28 days. The 28 days corresponded to the partial or complete passage of the four moons: New Moon of Akrindos, Crescent Moon of Thandius, Full Moon of Jious, and Waning Moon of Monrthis. The 28 days of the month were divided into four blocks of seven days, in accordance with what occurred in the Time of Goddesses, where the seven days corresponded to the development and mapping, from beginning to end, of each current moon cycle. However, these seven days would no longer receive the same names that had been attributed to the days in the Time of Goddesses, but rather they would be assigned names of great significance in the new system of temporal counting. The set of seven days was given the name Quanthan[1], which could be translated to our language as "Rotation". Having previously established the provisional 28 days of the month and the Quanthan, Yondar, before making any calculations to define the months of the year, removed 5 days in advance from the total of 365, which would not belong to any month but would be arranged in order at the end of all the months of the year. These five days, however, would have fundamental importance as they would be offered to the gods as a tribute. With the remaining 360 days, the mage Yondar divided them by the initial number of days in a month, which was 28, and ended up with the result of 12 months. At the end, Yondar found that there were 24 days left from the total of 360, which could not form a thirteenth month, nor could they be omitted from the calendar, as it would not function properly without them. Therefore, Yondar decided to incorporate the remaining 24 days into most of the months that would compose the year of Ernt-nador, the Known World.