What does “last hour”, “last day” and “last week” mean?
Each map shows the time it was created. The phrases “last hour”, “last day”, and “last week” are with respect to that time. Any earthquakes that occurred within one hour of the creation time are in the “last hour” and are colored red. Those that occurred between 1 and 24 hours before the map was created are in the “last day” and are colored blue. Those that occurred between 24 hours and 7 days (168 hours) before the map was drawn are in the “last week” and are colored yellow.
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- What does "last hour", "last day" and "last week" mean?