moon	侯 Hou	大夫 DaFu	卿 Qing	公 Gong	辟 Bi
1 Feb Tiger	62	4	42	53	11
2 March Rabbit	5	17	35	40	34
3 April Dragon	16	6	18	49	43
4 May Snake	56	7	8	9	1
5 June Horse	14	37	48	31	44
6 July Sheep	50	55	59	10	33
7 Aug Monkey	32	60	13	41	12
8 Sept Hen	57	45	26	22	20
9 Oct Dog	54	25	36	47	23
10 Nov Pig	52	63	21	28	2
11 Dec Rat	64	39	27	61	24
12 Jan Cow	3	15	38	46	19

The month (Jan etc) is the one in which the full moon happens, so it varies from year to year.

The moon weeks start with the left hexagram, the Hou, until first quarter. Then the 2nd, DaFu, from 1st quarter until full moon. The 3d, Qing, from full moon to last quarter, and the 4th, Gong, from last quarter to new moon.

The last row, the Bi or monarch, is the hexagram which reigns over the whole moon, from new moon to the next new moon.

Every day of a moon-week is one line of that hexagram, but the day of new moon, full moon or quarter moon has no line. Some weeks are a day longer, others shorter, depending on the hour of new moon etc., but then it is best to divide the time more or less. In old times, people did not reckon with exact hours, they reckoned with days and weeks.