20 (日)	05:44	11:32	17:28	-
	78cm	50cm	83cm	-
長潮 出 07:03 入 18:11 出 03:42 入 13:22

大河内湾（長崎）2028年02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
2/20 00:00	35.3	↑1.0
2/20 00:10	36.3	↑1.0
2/20 00:20	37.4	↑1.1
2/20 00:30	38.6	↑1.2
2/20 00:40	40.0	↑1.4
2/20 00:50	41.4	↑1.4
2/20 01:00	42.8	↑1.4
2/20 01:10	44.3	↑1.5
2/20 01:20	45.9	↑1.6
2/20 01:30	47.6	↑1.7
2/20 01:40	49.2	↑1.6
2/20 01:50	50.9	↑1.7
2/20 02:00	52.6	↑1.7
2/20 02:10	54.4	↑1.8
2/20 02:20	56.1	↑1.7
2/20 02:30	57.8	↑1.7
2/20 02:40	59.5	↑1.7
2/20 02:50	61.1	↑1.6
2/20 03:00	62.7	↑1.6
2/20 03:10	64.3	↑1.6
2/20 03:20	65.8	↑1.5
2/20 03:30	67.3	↑1.5
2/20 03:40	68.7	↑1.4
2/20 03:50	69.9	↑1.2
2/20 04:00	71.2	↑1.3
2/20 04:10	72.3	↑1.1
2/20 04:20	73.3	↑1.0
2/20 04:30	74.2	↑0.9
2/20 04:40	75.0	↑0.8
2/20 04:50	75.7	↑0.7
2/20 05:00	76.2	↑0.5
2/20 05:10	76.7	↑0.5
2/20 05:20	77.0	↑0.3
2/20 05:30	77.2	↑0.2
2/20 05:40	77.3	↑0.1	満潮
2/20 05:50	77.3	0
2/20 06:00	77.2	↓-0.1
2/20 06:10	76.9	↓-0.3
2/20 06:20	76.5	↓-0.4
2/20 06:30	76.0	↓-0.5
2/20 06:40	75.5	↓-0.5
2/20 06:50	74.8	↓-0.7
2/20 07:00	74.0	↓-0.8
2/20 07:10	73.1	↓-0.9
2/20 07:20	72.2	↓-0.9
2/20 07:30	71.2	↓-1.0
2/20 07:40	70.1	↓-1.1
2/20 07:50	69.0	↓-1.1
2/20 08:00	67.8	↓-1.2
2/20 08:10	66.6	↓-1.2
2/20 08:20	65.3	↓-1.3
2/20 08:30	64.1	↓-1.2
2/20 08:40	62.8	↓-1.3
2/20 08:50	61.5	↓-1.3
2/20 09:00	60.3	↓-1.2
2/20 09:10	59.1	↓-1.2
2/20 09:20	57.9	↓-1.2
2/20 09:30	56.7	↓-1.2
2/20 09:40	55.6	↓-1.1
2/20 09:50	54.6	↓-1.0
2/20 10:00	53.6	↓-1.0
2/20 10:10	52.7	↓-0.9
2/20 10:20	51.9	↓-0.8
2/20 10:30	51.2	↓-0.7
2/20 10:40	50.5	↓-0.7
2/20 10:50	50.0	↓-0.5
2/20 11:00	49.6	↓-0.4
2/20 11:10	49.3	↓-0.3
2/20 11:20	49.1	↓-0.2
2/20 11:30	49.0	↓-0.1	干潮
2/20 11:40	49.1	↑0.1
2/20 11:50	49.2	↑0.1
2/20 12:00	49.5	↑0.3
2/20 12:10	49.9	↑0.4
2/20 12:20	50.4	↑0.5
2/20 12:30	51.0	↑0.6
2/20 12:40	51.8	↑0.8
2/20 12:50	52.6	↑0.8
2/20 13:00	53.6	↑1.0
2/20 13:10	54.6	↑1.0
2/20 13:20	55.7	↑1.1
2/20 13:30	56.9	↑1.2
2/20 13:40	58.2	↑1.3
2/20 13:50	59.5	↑1.3
2/20 14:00	60.9	↑1.4
2/20 14:10	62.4	↑1.5
2/20 14:20	63.8	↑1.4
2/20 14:30	65.3	↑1.5
2/20 14:40	66.8	↑1.5
2/20 14:50	68.3	↑1.5
2/20 15:00	69.7	↑1.4
2/20 15:10	71.2	↑1.5
2/20 15:20	72.6	↑1.4
2/20 15:30	73.9	↑1.3
2/20 15:40	75.2	↑1.3
2/20 15:50	76.5	↑1.3
2/20 16:00	77.6	↑1.1
2/20 16:10	78.7	↑1.1
2/20 16:20	79.6	↑0.9
2/20 16:30	80.5	↑0.9
2/20 16:40	81.2	↑0.7
2/20 16:50	81.8	↑0.6
2/20 17:00	82.3	↑0.5
2/20 17:10	82.6	↑0.3
2/20 17:20	82.8	↑0.2	満潮
2/20 17:30	82.8	0
2/20 17:40	82.7	↓-0.1
2/20 17:50	82.4	↓-0.3
2/20 18:00	81.9	↓-0.5
2/20 18:10	81.3	↓-0.6
2/20 18:20	80.6	↓-0.7
2/20 18:30	79.7	↓-0.9
2/20 18:40	78.6	↓-1.1
2/20 18:50	77.4	↓-1.2
2/20 19:00	76.0	↓-1.4
2/20 19:10	74.5	↓-1.5
2/20 19:20	72.9	↓-1.6
2/20 19:30	71.1	↓-1.8
2/20 19:40	69.3	↓-1.8
2/20 19:50	67.3	↓-2.0
2/20 20:00	65.3	↓-2.0
2/20 20:10	63.1	↓-2.2
2/20 20:20	60.9	↓-2.2
2/20 20:30	58.6	↓-2.3
2/20 20:40	56.3	↓-2.3
2/20 20:50	54.0	↓-2.3
2/20 21:00	51.6	↓-2.4	最大潮位差
2/20 21:10	49.3	↓-2.3
2/20 21:20	46.9	↓-2.4	最大潮位差
2/20 21:30	44.6	↓-2.3
2/20 21:40	42.4	↓-2.2
2/20 21:50	40.2	↓-2.2
2/20 22:00	38.0	↓-2.2
2/20 22:10	36.0	↓-2.0
2/20 22:20	34.0	↓-2.0
2/20 22:30	32.1	↓-1.9
2/20 22:40	30.4	↓-1.7
2/20 22:50	28.8	↓-1.6
2/20 23:00	27.4	↓-1.4
2/20 23:10	26.1	↓-1.3
2/20 23:20	25.0	↓-1.1
2/20 23:30	24.1	↓-0.9
2/20 23:40	23.3	↓-0.8
2/20 23:50	22.7	↓-0.6