Signs of Twilight Hours (sandhyā-lakṣaṇa) - Verse 17

If it should appear at sunrise or sunset or midday (in one of the corners), there will be wars in the land; if it should be white, red, yellow, or black, the Brāhmaṇas, the Kṣatriyas , the Vaiśyas or the Śūdras will suffer respectively; countries to which the Daṇḍa points will also suffer.