A part of Lost Echo's plot line is set in the fourth millenary, starting in 3000 after Earth collapsed due to a Second Traumatism, then the new governors have established a calendar based on the twelve Zodiac signs starting from Year 1 and forth. The table below will show you how are divided days and months, also their respective names. Basically, it represents the time of a Zodiac year.
| Zodiac Sign | Date | Stellar Name | Month |
| Bélier | March 21st - April 19th | Aries | Arietis |
| Taureau | April 20th - May 20th | Taurus | Tauri |
| Gémeaux | May 21st - June 20th | Gemini | Geminorum |
| Cancer | June 21st - July 22sd | Cancer | Cancri |
| Lion | July 23rd - August 23rd | Leo | Leonis |
| Vierge | August 24th - September 22sd | Virgo | Virginis |
| Balance | September 23rd - October 22sd | Libra | Librae |
| Scorpion | October 23rd - November 21st | Scorpius | Scorpi |
| Sagittaire | November 22Sd - December 21st | Sagittarius | Sagittari |
| Capricorne | December 22sd - January 19th | Capricornus | Capricorni |
| Verseaux | Janaury 20th - Febraury 19th | Aquarius | Aquari |
| Poissons | Febraury 20th - March 20th | Pisces | Piscium |
Most of them I will not probably be using but I thought I should make a proper timeline prior to the story itself for you to understand what's going on :)
Inspired from: List of constellations
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