Specifically , it is ORGANIZATION@1 -LRB- EST -RRB- when observing standard time -LRB- winter -RRB- , and MISC@1 -LRB- EDT -RRB- when observing daylight saving time -LRB- summer -RRB- .

It is four hours behind ORGANIZATION@2 during summer Daylight saving time , when it is called Eastern Daylight Time -LRB- EDT -RRB- .
