Age 0 - Winter Dream is born on December 24
Age 1500 - Accident happens and loses vision to see the world
Age 2000 - Goes to school and meets Sol and Luna
Age 3000 - Plans surprise for the celebration, creating contract with Aura, given power to make the first snowfall in history
Age 3010 - Meets the blind filly Snowdrop, who created the snowflakes of winter
Age 3025 - Moon Rose dies giving birth to Winter Dream's only sister, White Snow.
Age 3040 - Summons Aura, getting back her vision, but the process caused her to stay in bed for about 100 years
Age 3200 - Becomes ruler of the Glaciation Empire
Age 3205 - Empire is attacked and mortally injured
Age 3210 - Meets Avan and Starlight Orchid after being saved by the two from the fallen pegasus
Age 3300 - Joins the Elements of Life in the final battle against the fallen pegasus
Age 3575 - Is trapped in lake with Celestia's magic by accident, causing her and the empire to disappear
Age 4208 - Escapes from lake, a gem around her neck on a string that nopony is sure of what it was
Age 4215 - Kidnapped by somepony (presumed to be the Element of Darkness), genetically hacked, causing the necklace to be revealed to be a secret part of her - rescued by Nighttime Frost
Age 4215.5 - ??? (Part of the Sitewide Plot, so I'll add it later)
Age 4216 - Becomes one of Twilight Sparkle's assistants
Age 4225 - Assigned to be Melody's caretaker
;;This is a rough outline, I'll edit it around later