The Tension-Stress Era is the name for the era that lasted from 27 February 2019 to 1 June 2019. Another name for this time period is The First Era.
The era gets its name for the "buildup of energy" during the period. Some of these pressures were small criticisms and the fact that the Joint Four nations had no activity. After the Tension-Stress Era, the Fracture Era began.