The Second Era begins when the Reman line of Cyrodiilic Emperors is assassinated and the Tsaesci Potentate Versidue-Shaie takes the throne. 'The First Era is a very long Era which lasts for 2,920 years and is marked by a visible shift in power between the Elven and Human races, with the rise of the Cyrodiil Empire. The Era ends with the founding of the Camoran Dynasty in Valenwood. Some notable events of the Merethic Era include the construction of the Adamantine Tower (ME 2500), the exodus of the Aldmeri peoples from their ancestral homeland Aldmeris and settling of the vast coasts of Tamriel, and later the exodus of the 'Nedic' peoples from the continent of Atmora, the ancestors of the Nords, who begin settling the northern coasts of Tamriel. This Era begins in ME 2500 and goes backwards to 1E 1 (the first year of the first era). 'The Merethic Era is the Era that begins when a linear timeline can be discerned. Elven history begins after the Cosmos stabilizes when Magnus leaves the world of Nirn and Lorkhan is condemned for creation of the mortal plane. It was a time of chaos and magic where gods walked Nirn. 'The Dawn Era is the Era in which time began and the world was created.

In the source tab i will mention this again and i will give links.)

(I need to say it right here.Because i only have little time to sit at computer i straight copied the description of the eras from the Elder Scrolls Wikia.

Skyrim months and days