20 (木)	06:17	12:22	18:24	-
	222cm	79cm	226cm	-
若潮 出 05:46 入 18:57 出 03:08 入 14:51

黒子島（長崎）2028年04月20日の10分毎の潮の高低差を確認できます。
また1日の潮の高低差が1番大きい（潮の流れが大きい）時間に「最大潮位差」と明記してます。

時刻	潮位	高低差	各ポイント
4/20 00:00	62.9	↑0.3
4/20 00:10	63.6	↑0.7
4/20 00:20	64.9	↑1.3
4/20 00:30	66.7	↑1.8
4/20 00:40	69.0	↑2.3
4/20 00:50	71.7	↑2.7
4/20 01:00	74.9	↑3.2
4/20 01:10	78.6	↑3.7
4/20 01:20	82.7	↑4.1
4/20 01:30	87.1	↑4.4
4/20 01:40	92.0	↑4.9
4/20 01:50	97.1	↑5.1
4/20 02:00	102.6	↑5.5
4/20 02:10	108.4	↑5.8
4/20 02:20	114.3	↑5.9
4/20 02:30	120.5	↑6.2
4/20 02:40	126.8	↑6.3
4/20 02:50	133.2	↑6.4
4/20 03:00	139.7	↑6.5
4/20 03:10	146.2	↑6.5
4/20 03:20	152.7	↑6.5
4/20 03:30	159.1	↑6.4
4/20 03:40	165.4	↑6.3
4/20 03:50	171.5	↑6.1
4/20 04:00	177.4	↑5.9
4/20 04:10	183.2	↑5.8
4/20 04:20	188.6	↑5.4
4/20 04:30	193.7	↑5.1
4/20 04:40	198.5	↑4.8
4/20 04:50	202.9	↑4.4
4/20 05:00	206.9	↑4.0
4/20 05:10	210.5	↑3.6
4/20 05:20	213.6	↑3.1
4/20 05:30	216.2	↑2.6
4/20 05:40	218.4	↑2.2
4/20 05:50	220.0	↑1.6
4/20 06:00	221.1	↑1.1
4/20 06:10	221.7	↑0.6	満潮
4/20 06:20	221.7	0
4/20 06:30	221.2	↓-0.5
4/20 06:40	220.2	↓-1.0
4/20 06:50	218.7	↓-1.5
4/20 07:00	216.7	↓-2.0
4/20 07:10	214.1	↓-2.6
4/20 07:20	211.1	↓-3.0
4/20 07:30	207.7	↓-3.4
4/20 07:40	203.8	↓-3.9
4/20 07:50	199.6	↓-4.2
4/20 08:00	194.9	↓-4.7
4/20 08:10	190.0	↓-4.9
4/20 08:20	184.7	↓-5.3
4/20 08:30	179.2	↓-5.5
4/20 08:40	173.5	↓-5.7
4/20 08:50	167.6	↓-5.9
4/20 09:00	161.6	↓-6.0
4/20 09:10	155.5	↓-6.1
4/20 09:20	149.4	↓-6.1
4/20 09:30	143.2	↓-6.2
4/20 09:40	137.1	↓-6.1
4/20 09:50	131.1	↓-6.0
4/20 10:00	125.3	↓-5.8
4/20 10:10	119.6	↓-5.7
4/20 10:20	114.2	↓-5.4
4/20 10:30	109.0	↓-5.2
4/20 10:40	104.1	↓-4.9
4/20 10:50	99.6	↓-4.5
4/20 11:00	95.4	↓-4.2
4/20 11:10	91.7	↓-3.7
4/20 11:20	88.4	↓-3.3
4/20 11:30	85.5	↓-2.9
4/20 11:40	83.1	↓-2.4
4/20 11:50	81.2	↓-1.9
4/20 12:00	79.9	↓-1.3
4/20 12:10	79.0	↓-0.9
4/20 12:20	78.7	↓-0.3	干潮
4/20 12:30	79.0	↑0.3
4/20 12:40	79.7	↑0.7
4/20 12:50	81.0	↑1.3
4/20 13:00	82.9	↑1.9
4/20 13:10	85.2	↑2.3
4/20 13:20	88.0	↑2.8
4/20 13:30	91.3	↑3.3
4/20 13:40	95.1	↑3.8
4/20 13:50	99.2	↑4.1
4/20 14:00	103.8	↑4.6
4/20 14:10	108.7	↑4.9
4/20 14:20	114.0	↑5.3
4/20 14:30	119.5	↑5.5
4/20 14:40	125.3	↑5.8
4/20 14:50	131.3	↑6.0
4/20 15:00	137.5	↑6.2
4/20 15:10	143.7	↑6.2
4/20 15:20	150.1	↑6.4
4/20 15:30	156.4	↑6.3
4/20 15:40	162.7	↑6.3
4/20 15:50	169.0	↑6.3
4/20 16:00	175.1	↑6.1
4/20 16:10	181.1	↑6.0
4/20 16:20	186.9	↑5.8
4/20 16:30	192.4	↑5.5
4/20 16:40	197.5	↑5.1
4/20 16:50	202.4	↑4.9
4/20 17:00	206.9	↑4.5
4/20 17:10	211.0	↑4.1
4/20 17:20	214.6	↑3.6
4/20 17:30	217.7	↑3.1
4/20 17:40	220.4	↑2.7
4/20 17:50	222.5	↑2.1
4/20 18:00	224.1	↑1.6
4/20 18:10	225.1	↑1.0
4/20 18:20	225.6	↑0.5	満潮
4/20 18:30	225.5	↓-0.1
4/20 18:40	224.8	↓-0.7
4/20 18:50	223.5	↓-1.3
4/20 19:00	221.7	↓-1.8
4/20 19:10	219.3	↓-2.4
4/20 19:20	216.3	↓-3.0
4/20 19:30	212.8	↓-3.5
4/20 19:40	208.9	↓-3.9
4/20 19:50	204.4	↓-4.5
4/20 20:00	199.5	↓-4.9
4/20 20:10	194.2	↓-5.3
4/20 20:20	188.4	↓-5.8
4/20 20:30	182.4	↓-6.0
4/20 20:40	176.0	↓-6.4
4/20 20:50	169.4	↓-6.6
4/20 21:00	162.6	↓-6.8
4/20 21:10	155.6	↓-7.0
4/20 21:20	148.5	↓-7.1
4/20 21:30	141.3	↓-7.2	最大潮位差
4/20 21:40	134.1	↓-7.2	最大潮位差
4/20 21:50	126.9	↓-7.2	最大潮位差
4/20 22:00	119.9	↓-7.0
4/20 22:10	112.9	↓-7.0
4/20 22:20	106.2	↓-6.7
4/20 22:30	99.7	↓-6.5
4/20 22:40	93.4	↓-6.3
4/20 22:50	87.5	↓-5.9
4/20 23:00	82.0	↓-5.5
4/20 23:10	76.8	↓-5.2
4/20 23:20	72.2	↓-4.6
4/20 23:30	68.0	↓-4.2
4/20 23:40	64.3	↓-3.7
4/20 23:50	61.2	↓-3.1