Visibility III / V
At about eight o'clock on Christmas Eve, I saw a calm arc of northern lights in the sky, which gradually intensified, but disappeared into almost nonexistence, and I missed shooting. Ten countries looked out again, when the sky was momentarily bright and blazing. After the warping had leveled off, they burned steadily green for a long time, but as midnight approached they re-ignited and became fast-moving. After about fifteen minutes, the lights faded again. The frost is about -25 and the sky is almost cloudless.