《宋史·志·卷三》
月晕，是战争；日晕三夜，预兆赦免，到五夜，不出一百天有赦免。
月晕，为兵；三宿，主赦，及五舍不出百日赦。
Lunar halo, there will be war; a solar halo for three nights, it is expected to be amnesty. In five nights, there will be amnesty in less than a hundred days.