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Halley operates on GMT time zone throughout the winter, however geographically, due to it's longitude (26° West) it's around 1 hour and 45 minutes behind. Because of that, the solar noon at Halley is at 13:45 GMT. This picture was taken less than two hours after noon, and it's an 8 seconds exposure at f/5.6 and ISO 100 - it's truly getting completely dark here.