The very fully developed system of the Nandi is curious in that not the phase but the time of the moon’s rising chiefly gives the name of the day. 1, ‘the tanners have seen the moon’; 2, ‘the moon is white’ or ‘new’; 3 and 4, ‘the moon has cast a light’; 5 and 6, ‘the moon has become warm’; 7 and 8, ‘the moon has leisure’; 9 and 10, ‘the herdsmen play in the moonlight’; 11 and 12, ‘the moon is high in the evening’; 13, ‘the moon turns’; 14, ‘the moon has accompanied the goats to the kraal’[696]; 16 (full moon), ‘the moon has passed along (the heavens)’; 17, (morning) ‘the birds have driven away the moon’, (evening) ‘the moon has disappeared for a short while’; 18, ‘the moon has commenced to rise late’; 19 to 21, ‘the moon is late’; 22, ‘the moon has climbed up’ (i. e. stands high in the heavens in the morning); 23 to 25, ‘the moon is late up above’; 26 and 27, ‘the moon has turned’ (i. e. goes towards the west); 28, ‘the moon is nearing death’; 29, ‘the people discuss the moon’ (discuss whether it is dead), or ‘the sun has murdered the moon’; 30, ‘the moon is dead’, or ‘the moon’s darkness’[697]. An example of the naming of smaller groups of days after the phases of the moon is afforded by the old Arabian names for the nights of the month[698]. The nights are grouped in threes, and are called:--1-3, _ghurar_, ‘the bright ones’; 4-6, _nufal_, ‘the overlapping nights’ (?); 7-9, _tusa’_, ‘the nine’; 10-12, _‘ushar_, ‘the ten’; 13-15, ‘the white nights’, lit. _‘ajjam al-lajālī l-bidi_, ‘the days of the white nights’, the time of full moon; 16-18, _dura’_, ‘the white nights with black heads’, since the moon does not rise until the night; 19-21, _zulam_, ‘the dark nights’; 22-24, _hanadis_ or _duhm_, ‘the very dark nights’; 25-27, _da’ādī’_, perhaps after _mihaq_; 28-30, _mihaq_, from _mhq_, ‘to extinguish’. The time of the moon’s invisibility, _mihaq_, consists of the following days:--1, _ad-da’dja_, ‘the black one’; 2, _as-sirār_, from _srr_, ‘to be hidden’; 3, _al-falta_, ‘sudden event’, ‘attack’. According to some this last name is used only on the night before, according to others after, a holy month. This looks like an attempt to regulate the insertion of the 30th day.