# GRASS Help System

## TIME OF YEAR

In most regions, the season of the year at which imagery is flown will drastically impact landcover. Consider the application for which your imagery will be used when selecting a date for imagery. If you wish to detect landscape changes occurring over multiple years, attempt to order satellite data from the same time (month) of each year.

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Automatically created on: Fri Oct 20 10:09:59 2006