Kalgar's calendar is a peculiar one. Because of its shifts in and out of the astral plane, days and weeks cannot easily be synchronized with the cycles of it's sun. The most widely accepted calendar is the Telestrian Calendar, named so after it's inventor, Telestria, a revered Rakshasa sorceress hailing from Rasha'Aldun.
Telestria developed an intuitive time measurement system by tracking the pattern of the planet's planar shifts, developing distinct 'days', each day encompassing the span of four planar shifts. Each day is broken into four parts, two delves (planar shifts into the Astral Sea) and two returns (planar shifts that return the planet to the Material Plane) with each delve and each return lasting six hours. In this way, the Telestrian Calendar is able to maintain a time schedule that remains in sync with it's relative position (or the relative position it would be in) in relation to the sun, maintaining a 365-day year, broken up into 12 months, each consisting of three ten-day-long weeks Additionally, while the days and weeks have no proper names (simply referred to as, for example, the first day of the second week), each month has a proper name with a special meaning, generally associated with an important historical event . Five days are set apart from the twelve months; celebrations marking special points of the year or particular days of remembrance.
- Daeanis: The first month of the year, an important month for the Urskan of the Frozen Wastes, normally a month of festivities for the Urskan were it not for the ongoing war.
- Eventide: This holiday originated from the Crescentwild and marks the end of winter and the transition into spring. It is a time of fertility, and is celebrated by many nations with feasts, fireworks, and festivals.
- Glorrigal: The second month of the year, marked by all countries as the time the great rifts to the other planes finally closed and the world began it's precarious balance between the material plane and the Astral Sea.
- Sellaern: The third month of the year and an auspicious and spiritual time for the nation of Tokujima who believe that the primal spirits that protect their continent take form in the material and walk the lands.
- Belidash: The fourth month of the year. This month is famous in many countries for hosting the World Tournament, where people from many nations spectate or compete in nonlethal combat matches to celebrate the practice of martial arts, swordsmanship, the arcane arts, and et cetera.
- The Gathering: An important date for nearly all the nations of the world. During this day, each nation gathers to form a great counsel, discussing treaties, war, development, economy, and much more.
- Myar: The fifth month of the year. A very hectic time for the people of Kalgar as the many portals that appear across the world increase in frequency due to a surge of energy through the leylines that occurs biannually. Often called 'the Time of Trying'.
- Bellaren: The sixth month of the year. An important month in the Crescentwild, marking the City of Summer's transition into the material plane. Also very prominent for the shifters of the Crescentwild, a time when they perform their ceremonial Bloodhunts.
- Auran: The seventh month of the year. During this time, the Githyanki of the Astral Sea travel to Kalgar during it's delves into the Astral Sea upon their wondrous Spelljammers, bringing exotic trade to many nations.
- Remembrance: A day marking the events of the Animæus Ascension and a time of remembrance for the countless that died during the tragic event.
- Margrim: The eighth month of the year. This month is a time of commemoration for the Dwarves of Helzak. During this time, the Dwarves pay respect to their ancestral leaders by commissioning expensive and elegant weapons, armor, or other crafts to be made for the nations current Thanes.
- Kyvan: The ninth month of the year, when the second leyline surge occurs. During this time, portals and other planar anomolies become more frequent. Often called 'the Time of Testing'.
- Bron-Yr-Aur: Originating from a Dwarven term meaning 'Hills of Gold', Bron-Yr-Aur originally marked the beginning of a 'gold rush' in Helzak, but has developed over time to celebrate a time of prosperity within Helzak.
- Duevir: The tenth month of the year. This month marks the first attempts by the people of Caparice at colonizing Adelbrecht. The night of the month, named 'All Hallows Eve' is a night commemorating the settlers first encounter with the fierce werewolves and fearmongering witches of the region.
- Feravain: The eleventh month of the year. A month famous for the Exibition Arcana i Rasha'Aldun, a day celebrating all things arcana and it's importance in Rasha'Aldun's history. This month is filled with great presentations of magic, evocative, arcane-fueled fireworks, and tournament-style wizards' duels.
- the Worldtrade: A day of widespread prosperity among many of the nations of Kalgar. During this time, the people of Caparice, Stahlenreich, Rasha'Aldun, and Helzak all meet in the demiplane of Sigil, where a great interplanar market is formed.
- Morithan: The twelvth month of the year. A time celebrating Elven independence in the regions of Herod, Helzak, and Zel'Vaan, Morithan commemorates the Elves' resurgence into the modern world from their once primitive nature.