So there are 12 months in The Elder Scrolls. Morning Star, Sun's Dawn, First Seed, Rain's hand, Second Seed, Mid Year, Sun's Height, Last Seed, Hearthfire, Frost Fall, Sun's Dusk, and Evening Star.
There are 7 days in a week. Morndas, Tirdas, Middas, Turdas, Fredas, Loredas, and Sundas.
Months and their equivalents to ours
Morning Star-January
Sun's Dawn-February
First Seed-March
Rain's Hand-April
Second Seed-May
Mid Year-June
Sun's Height-July
Last Seed- August
Hearthfire-September
Frost Fall-October
Sun's Dusk- November
Evening Star-December
Days and their Equivalents
Morndas-Monday
Tirday-Tuesday
Middas-Wednesday
Turdas-Thrusday
Fredas-Friday
Loredas-Saturday
Sundas-Sunday
Eras
An era is a historic period separated by big events, such as a new line of emperors or an Oblivion Crisis.
There have been a lot of eras. Below is going to be a list of them all, and some brief history.
Dawn Era- The Dawn Era is where everything started. The creation of Nirn and it's continents. The era ended when Lorkhan was turned on for the creation of Mundus.
Merethic Era- It started after the defeat of Lorkhan. The elves were abundant in this era. It ended when the Camoran Dynasty started.
First Era- The power shifted from Mer to Men, after the slave rebellion. The rebellion started the Alessian Empire, and would be changed to the Reman Dynasty. When the Reman Dynasty ended, so did the era.
Second Era- There become provinces, and large alliances between provinces. In this era, Tiber Septim would conquer Tamriel and bring it together. The beginning of the Septim Dynasty ended the Second Era.
Third Era- The Septim Dynasty lasted throughout most of the Era. The era ended when the Hero of Kvatch stopped the Oblivion Crisis.
Fourth Era- Elves team up and become the Third Aldemeri Dominion. The Great War was started and ended. The Skyrim Civil War started and ended. There was also the Dragon Crisis, that was ended by the last Dragonborn.