How many times does the tide rise a day? When is the climax?

(Grade one, sixteen years old) 0: 48 7: 0013:129: 24

(Grade two,17)1:36 7: 4814: 00 20:12

(Grade 3,18 2: 24 8: 3614: 48 21:00)

(Grade 4, 19) 3:129: 2415: 3621:48

(5th and 20th) 4: 0010:1216: 24 22: 36

(Grade 6, 2 1 grade) 4: 4811:0017:12 23: 24

(Grade 7, 22) 5: 3611:4818: 000:12

(Grade 8, 23) 6: 2412: 3618: 481:00

(September 24)

(10, 25th) 8: 0014:12 20: 24 2: 36

(XI, XXVI) 8: 4815: 00 21:123: 24

(XII, XXVII) 9: 3615: 48 22: 00 4:12

(XIII, XXVIII)10: 2416: 36 22: 48 5; 00

(XIV, XXIX)11:1217: 24 23: 36 5: 48

( 15, 30) 12: 00 18: 12 0: 24 6: 36

On the first and fifteenth day of the first lunar month, the tide level is the highest at 6 am and 6 pm to 18, and the lowest at 6 noon to 12 and 0 am. Then every day, the rising and falling time of the tide is delayed by 48 minutes.