20 (木)	05:38	11:28	17:17	23:42
	151cm	73cm	153cm	40cm
若潮 出 06:19 入 19:12 出 03:26 入 15:20

黄尾嶼（沖縄）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	46.4	↑1.9
4/20 00:10	48.6	↑2.2
4/20 00:20	51.1	↑2.5
4/20 00:30	53.8	↑2.7
4/20 00:40	56.9	↑3.1
4/20 00:50	60.1	↑3.2
4/20 01:00	63.6	↑3.5
4/20 01:10	67.3	↑3.7
4/20 01:20	71.2	↑3.9
4/20 01:30	75.2	↑4.0
4/20 01:40	79.4	↑4.2
4/20 01:50	83.6	↑4.2
4/20 02:00	87.9	↑4.3
4/20 02:10	92.3	↑4.4
4/20 02:20	96.7	↑4.4
4/20 02:30	101.0	↑4.3
4/20 02:40	105.4	↑4.4
4/20 02:50	109.7	↑4.3
4/20 03:00	113.8	↑4.1
4/20 03:10	117.9	↑4.1
4/20 03:20	121.8	↑3.9
4/20 03:30	125.6	↑3.8
4/20 03:40	129.1	↑3.5
4/20 03:50	132.5	↑3.4
4/20 04:00	135.6	↑3.1
4/20 04:10	138.5	↑2.9
4/20 04:20	141.0	↑2.5
4/20 04:30	143.3	↑2.3
4/20 04:40	145.4	↑2.1
4/20 04:50	147.0	↑1.6
4/20 05:00	148.4	↑1.4
4/20 05:10	149.5	↑1.1
4/20 05:20	150.2	↑0.7
4/20 05:30	150.6	↑0.4	満潮
4/20 05:40	150.7	↑0.1
4/20 05:50	150.4	↓-0.3
4/20 06:00	149.8	↓-0.6
4/20 06:10	148.9	↓-0.9
4/20 06:20	147.7	↓-1.2
4/20 06:30	146.2	↓-1.5
4/20 06:40	144.4	↓-1.8
4/20 06:50	142.4	↓-2.0
4/20 07:00	140.1	↓-2.3
4/20 07:10	137.6	↓-2.5
4/20 07:20	134.8	↓-2.8
4/20 07:30	131.9	↓-2.9
4/20 07:40	128.8	↓-3.1
4/20 07:50	125.6	↓-3.2
4/20 08:00	122.3	↓-3.3
4/20 08:10	118.9	↓-3.4
4/20 08:20	115.5	↓-3.4
4/20 08:30	112.0	↓-3.5
4/20 08:40	108.5	↓-3.5
4/20 08:50	105.0	↓-3.5
4/20 09:00	101.6	↓-3.4
4/20 09:10	98.3	↓-3.3
4/20 09:20	95.1	↓-3.2
4/20 09:30	92.0	↓-3.1
4/20 09:40	89.1	↓-2.9
4/20 09:50	86.3	↓-2.8
4/20 10:00	83.8	↓-2.5
4/20 10:10	81.4	↓-2.4
4/20 10:20	79.4	↓-2.0
4/20 10:30	77.5	↓-1.9
4/20 10:40	76.0	↓-1.5
4/20 10:50	74.7	↓-1.3
4/20 11:00	73.7	↓-1.0
4/20 11:10	73.0	↓-0.7
4/20 11:20	72.7	↓-0.3	干潮
4/20 11:30	72.6	↓-0.1
4/20 11:40	72.8	↑0.2
4/20 11:50	73.4	↑0.6
4/20 12:00	74.3	↑0.9
4/20 12:10	75.4	↑1.1
4/20 12:20	76.9	↑1.5
4/20 12:30	78.6	↑1.7
4/20 12:40	80.6	↑2.0
4/20 12:50	82.9	↑2.3
4/20 13:00	85.4	↑2.5
4/20 13:10	88.1	↑2.7
4/20 13:20	91.0	↑2.9
4/20 13:30	94.1	↑3.1
4/20 13:40	97.3	↑3.2
4/20 13:50	100.7	↑3.4
4/20 14:00	104.1	↑3.4
4/20 14:10	107.7	↑3.6
4/20 14:20	111.2	↑3.5
4/20 14:30	114.8	↑3.6
4/20 14:40	118.4	↑3.6
4/20 14:50	121.9	↑3.5
4/20 15:00	125.4	↑3.5
4/20 15:10	128.7	↑3.3
4/20 15:20	132.0	↑3.3
4/20 15:30	135.0	↑3.0
4/20 15:40	137.9	↑2.9
4/20 15:50	140.6	↑2.7
4/20 16:00	143.1	↑2.5
4/20 16:10	145.3	↑2.2
4/20 16:20	147.3	↑2.0
4/20 16:30	148.9	↑1.6
4/20 16:40	150.3	↑1.4
4/20 16:50	151.4	↑1.1
4/20 17:00	152.1	↑0.7
4/20 17:10	152.5	↑0.4	満潮
4/20 17:20	152.5	0
4/20 17:30	152.2	↓-0.3
4/20 17:40	151.5	↓-0.7
4/20 17:50	150.5	↓-1.0
4/20 18:00	149.1	↓-1.4
4/20 18:10	147.4	↓-1.7
4/20 18:20	145.4	↓-2.0
4/20 18:30	143.0	↓-2.4
4/20 18:40	140.3	↓-2.7
4/20 18:50	137.4	↓-2.9
4/20 19:00	134.1	↓-3.3
4/20 19:10	130.6	↓-3.5
4/20 19:20	126.9	↓-3.7
4/20 19:30	123.0	↓-3.9
4/20 19:40	118.8	↓-4.2
4/20 19:50	114.5	↓-4.3
4/20 20:00	110.1	↓-4.4
4/20 20:10	105.6	↓-4.5
4/20 20:20	101.0	↓-4.6
4/20 20:30	96.3	↓-4.7	最大潮位差
4/20 20:40	91.7	↓-4.6
4/20 20:50	87.1	↓-4.6
4/20 21:00	82.5	↓-4.6
4/20 21:10	78.0	↓-4.5
4/20 21:20	73.6	↓-4.4
4/20 21:30	69.4	↓-4.2
4/20 21:40	65.4	↓-4.0
4/20 21:50	61.5	↓-3.9
4/20 22:00	57.9	↓-3.6
4/20 22:10	54.5	↓-3.4
4/20 22:20	51.5	↓-3.0
4/20 22:30	48.7	↓-2.8
4/20 22:40	46.2	↓-2.5
4/20 22:50	44.1	↓-2.1
4/20 23:00	42.4	↓-1.7
4/20 23:10	41.0	↓-1.4
4/20 23:20	40.0	↓-1.0
4/20 23:30	39.3	↓-0.7
4/20 23:40	39.1	↓-0.2	干潮
4/20 23:50	39.3	↑0.2