EST is the Eastern standard time and is 5 hours behind the GMT. EST = GMT/UTC -5. EDT and EST are parts of the Eastern Time Zone that is observed in 17 states of the country lying in the eastern region. In the northern parts of this time zone, clocks are turned back by an hour during spring to save daylight.
Prince Klemens von Metternich (1773-1859), Austrian politician and diplomat, suppressed nationalistic and democratic trends in Central Europe but was also the architect of a diplomatic system which kept Europe at peace for a century.
It can be argued that the Age of Metternich ended with the outbreak of the First World War in 1914 and the failure of the Concert of Europe to maintain peace, but realistically the Age of Metternich ended in 1848 with the revival of French power and the instability and wars that followed.