Regular Trading Hours
Most markets have what is call Regular Trading Hours. Some correspond to what is called the Cash Market or PIT Session.
Regular Trading Hours on this site or posted in Eastern Standart Time.
Examples of RTH:
CL – 9:00am – 2:30pm EST
ES – 9:30am -4:15pm EST
NQ – 9:30am -4:15pm EST
RTY – 9:30am -4:15pm EST
YM – 9:30am -4:15pm EST