After Hours
Trading done after the regular stock-market close. Primarily an equities concept.
Stocks: 4pm-8pm ET. Earnings get released in after-hours, causing big moves on thin volume. Forex doesn't have an 'after hours' - the market runs 24/5.
Related
Learn to actually use After Hours.
Definitions are the easy part. The free first five modules put this on a real chart and make you do the work. No card required.