The time of day in the time zone that encompasses the east coast of Canada, which lies on the Atlantic Ocean.

(physics, chemistry) An electrode with a standard electrode potential of zero; used as a standard against which other electrodes are measured.

an electrode potential measured under standard conditions; a temperature or 298K, 1 atmosphere pressure and at 1 mole of the activity of redox participants of the half-reaction.

(physics, chemistry) The international, standard conditions used to aid reproducibility; a temperature of 0 °C (273.15 K) and a pressure of 1 atmosphere (101.325 kPa). Abbreviated as STP.

The time zone that encompasses the segment of the United States that includes the Rocky Mountains.

The time of day in the time zone that encompasses the west coast of the United States.

The time of day in the time zone that encompasses a central portion of the United States.

The timezone that encompasses the East coast of the United States, and parts of Canada during winter and late autumn; it is five hours behind Greenwich Mean Time.

(statistics) The normal distribution with a mean of zero and a variance of one.

(uncountable, sometimes derogatory, slang) A notional system of time or time zone which others sometimes derogatorily ascribe to Jewish people, and which they sometimes jocularly ascribe to themselves, to account for their supposed tendency to be leisurely, not rigorous about scheduling, and often tardy.