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As @slybloty says, there is no hard and fast rule, however: For your location, be aware of prevailing winds, the location of seas, coasts, mountains, deserts etc. as these will guide your guesses...
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As @slybloty says, there is no hard and fast rule, however: For your location, be aware of prevailing winds, the location of seas, coasts, mountains, deserts etc. as these will guide your guesses...