What time is 1800 UTC in Eastern Time? (Be specific. We change clocks twice during the year.) What typeof radiationdoes the visible satellite image

What time is 1800 UTC in Eastern Time? (Be specific. We change clocks twice during the year.)
What type of radiation does the visible satellite image show? (See Figures 2.8 or 2.9 for radiation names.)
Does visible imagery measure a meteorological variable? (“Measurements” require obtaining a number and unit of measurement directly off the satellite image.)
Using a loop of visible imagery, why do land and ocean boundaries not move, but clouds do? (Be complete and specific.)