20 (木)	08:16	01:58	20:18	14:17
	117cm	-3cm	120cm	8cm
大潮 出 07:03 入 18:11 出 05:38 入 16:45 潮干狩り ◎ 12:28～16:05

大河内湾（長崎）2031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	22.0	↓-4.1
2/20 00:10	18.1	↓-3.9
2/20 00:20	14.5	↓-3.6
2/20 00:30	11.1	↓-3.4
2/20 00:40	8.1	↓-3.0
2/20 00:50	5.3	↓-2.8
2/20 01:00	2.9	↓-2.4
2/20 01:10	0.9	↓-2.0
2/20 01:20	-0.8	↓-1.7
2/20 01:30	-2.1	↓-1.3
2/20 01:40	-3.0	↓-0.9
2/20 01:50	-3.5	↓-0.5	干潮
2/20 02:00	-3.6	↓-0.1
2/20 02:10	-3.3	↑0.3
2/20 02:20	-2.5	↑0.8
2/20 02:30	-1.4	↑1.1
2/20 02:40	0.2	↑1.6
2/20 02:50	2.1	↑1.9
2/20 03:00	4.4	↑2.3
2/20 03:10	7.0	↑2.6
2/20 03:20	10.0	↑3.0
2/20 03:30	13.4	↑3.4
2/20 03:40	17.0	↑3.6
2/20 03:50	20.9	↑3.9
2/20 04:00	25.0	↑4.1
2/20 04:10	29.4	↑4.4
2/20 04:20	34.0	↑4.6
2/20 04:30	38.7	↑4.7
2/20 04:40	43.5	↑4.8
2/20 04:50	48.4	↑4.9
2/20 05:00	53.4	↑5.0
2/20 05:10	58.4	↑5.0
2/20 05:20	63.4	↑5.0
2/20 05:30	68.4	↑5.0
2/20 05:40	73.2	↑4.8
2/20 05:50	78.0	↑4.8
2/20 06:00	82.6	↑4.6
2/20 06:10	87.0	↑4.4
2/20 06:20	91.2	↑4.2
2/20 06:30	95.2	↑4.0
2/20 06:40	98.9	↑3.7
2/20 06:50	102.3	↑3.4
2/20 07:00	105.4	↑3.1
2/20 07:10	108.1	↑2.7
2/20 07:20	110.5	↑2.4
2/20 07:30	112.5	↑2.0
2/20 07:40	114.2	↑1.7
2/20 07:50	115.4	↑1.2
2/20 08:00	116.2	↑0.8
2/20 08:10	116.6	↑0.4	満潮
2/20 08:20	116.6	0
2/20 08:30	116.2	↓-0.4
2/20 08:40	115.3	↓-0.9
2/20 08:50	114.1	↓-1.2
2/20 09:00	112.5	↓-1.6
2/20 09:10	110.4	↓-2.1
2/20 09:20	108.1	↓-2.3
2/20 09:30	105.3	↓-2.8
2/20 09:40	102.3	↓-3.0
2/20 09:50	98.9	↓-3.4
2/20 10:00	95.3	↓-3.6
2/20 10:10	91.4	↓-3.9
2/20 10:20	87.3	↓-4.1
2/20 10:30	83.0	↓-4.3
2/20 10:40	78.6	↓-4.4
2/20 10:50	74.0	↓-4.6
2/20 11:00	69.3	↓-4.7
2/20 11:10	64.6	↓-4.7
2/20 11:20	59.8	↓-4.8
2/20 11:30	55.1	↓-4.7
2/20 11:40	50.4	↓-4.7
2/20 11:50	45.8	↓-4.6
2/20 12:00	41.4	↓-4.4
2/20 12:10	37.1	↓-4.3
2/20 12:20	32.9	↓-4.2
2/20 12:30	29.0	↓-3.9
2/20 12:40	25.3	↓-3.7
2/20 12:50	21.9	↓-3.4
2/20 13:00	18.9	↓-3.0
2/20 13:10	16.1	↓-2.8
2/20 13:20	13.7	↓-2.4
2/20 13:30	11.6	↓-2.1
2/20 13:40	9.9	↓-1.7
2/20 13:50	8.7	↓-1.2
2/20 14:00	7.8	↓-0.9
2/20 14:10	7.3	↓-0.5	干潮
2/20 14:20	7.2	↓-0.1
2/20 14:30	7.6	↑0.4
2/20 14:40	8.4	↑0.8
2/20 14:50	9.6	↑1.2
2/20 15:00	11.2	↑1.6
2/20 15:10	13.1	↑1.9
2/20 15:20	15.5	↑2.4
2/20 15:30	18.2	↑2.7
2/20 15:40	21.3	↑3.1
2/20 15:50	24.6	↑3.3
2/20 16:00	28.3	↑3.7
2/20 16:10	32.2	↑3.9
2/20 16:20	36.4	↑4.2
2/20 16:30	40.7	↑4.3
2/20 16:40	45.3	↑4.6
2/20 16:50	50.0	↑4.7
2/20 17:00	54.7	↑4.7
2/20 17:10	59.6	↑4.9
2/20 17:20	64.5	↑4.9
2/20 17:30	69.4	↑4.9
2/20 17:40	74.2	↑4.8
2/20 17:50	79.0	↑4.8
2/20 18:00	83.6	↑4.6
2/20 18:10	88.1	↑4.5
2/20 18:20	92.5	↑4.4
2/20 18:30	96.6	↑4.1
2/20 18:40	100.4	↑3.8
2/20 18:50	104.0	↑3.6
2/20 19:00	107.3	↑3.3
2/20 19:10	110.2	↑2.9
2/20 19:20	112.8	↑2.6
2/20 19:30	115.0	↑2.2
2/20 19:40	116.8	↑1.8
2/20 19:50	118.2	↑1.4
2/20 20:00	119.2	↑1.0
2/20 20:10	119.7	↑0.5	満潮
2/20 20:20	119.8	↑0.1
2/20 20:30	119.5	↓-0.3
2/20 20:40	118.7	↓-0.8
2/20 20:50	117.5	↓-1.2
2/20 21:00	115.8	↓-1.7
2/20 21:10	113.7	↓-2.1
2/20 21:20	111.2	↓-2.5
2/20 21:30	108.3	↓-2.9
2/20 21:40	105.1	↓-3.2
2/20 21:50	101.5	↓-3.6
2/20 22:00	97.5	↓-4.0
2/20 22:10	93.3	↓-4.2
2/20 22:20	88.8	↓-4.5
2/20 22:30	84.0	↓-4.8
2/20 22:40	79.0	↓-5.0
2/20 22:50	73.9	↓-5.1
2/20 23:00	68.6	↓-5.3
2/20 23:10	63.2	↓-5.4
2/20 23:20	57.7	↓-5.5	最大潮位差
2/20 23:30	52.2	↓-5.5	最大潮位差
2/20 23:40	46.8	↓-5.4
2/20 23:50	41.3	↓-5.5	最大潮位差