For this technique to work within the southern hemisphere, the 12 is pointed toward the Sun and the purpose midway between the hour hand and 12 o’clock will indicate north. During daylight saving time, the same methodology could be employed using 1 o’clock as a substitute of 12. This method is correct enough for use solely at pretty high latitudes. The standards for diving watches are regulated by the ISO 6425 international commonplace. The watches are examined in static or still water underneath 125% of the rated strain, thus a watch with a 200-metre ranking shall be water resistant whether it is stationary and under 250 metres of static water.

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