20 (土)	09:56	03:55	22:31	16:14
	136cm	12cm	130cm	-4cm
中潮 出 05:46 入 18:59 出 21:43 入 06:57 潮干狩り ◎ 14:08～18:21

大河内湾（長崎）2030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	100.7	↓-4.7
4/20 00:10	95.8	↓-4.9
4/20 00:20	90.8	↓-5.0
4/20 00:30	85.6	↓-5.2
4/20 00:40	80.3	↓-5.3
4/20 00:50	74.9	↓-5.4
4/20 01:00	69.6	↓-5.3
4/20 01:10	64.2	↓-5.4
4/20 01:20	59.0	↓-5.2
4/20 01:30	53.8	↓-5.2
4/20 01:40	48.8	↓-5.0
4/20 01:50	44.0	↓-4.8
4/20 02:00	39.4	↓-4.6
4/20 02:10	35.1	↓-4.3
4/20 02:20	31.0	↓-4.1
4/20 02:30	27.3	↓-3.7
4/20 02:40	23.9	↓-3.4
4/20 02:50	20.9	↓-3.0
4/20 03:00	18.3	↓-2.6
4/20 03:10	16.1	↓-2.2
4/20 03:20	14.4	↓-1.7
4/20 03:30	13.0	↓-1.4
4/20 03:40	12.2	↓-0.8
4/20 03:50	11.8	↓-0.4	干潮
4/20 04:00	11.9	↑0.1
4/20 04:10	12.4	↑0.5
4/20 04:20	13.4	↑1.0
4/20 04:30	14.8	↑1.4
4/20 04:40	16.7	↑1.9
4/20 04:50	19.0	↑2.3
4/20 05:00	21.8	↑2.8
4/20 05:10	24.9	↑3.1
4/20 05:20	28.3	↑3.4
4/20 05:30	32.2	↑3.9
4/20 05:40	36.3	↑4.1
4/20 05:50	40.7	↑4.4
4/20 06:00	45.4	↑4.7
4/20 06:10	50.3	↑4.9
4/20 06:20	55.3	↑5.0
4/20 06:30	60.5	↑5.2
4/20 06:40	65.8	↑5.3
4/20 06:50	71.1	↑5.3
4/20 07:00	76.5	↑5.4
4/20 07:10	81.9	↑5.4
4/20 07:20	87.1	↑5.2
4/20 07:30	92.3	↑5.2
4/20 07:40	97.4	↑5.1
4/20 07:50	102.3	↑4.9
4/20 08:00	106.9	↑4.6
4/20 08:10	111.3	↑4.4
4/20 08:20	115.4	↑4.1
4/20 08:30	119.2	↑3.8
4/20 08:40	122.7	↑3.5
4/20 08:50	125.8	↑3.1
4/20 09:00	128.5	↑2.7
4/20 09:10	130.8	↑2.3
4/20 09:20	132.6	↑1.8
4/20 09:30	134.0	↑1.4
4/20 09:40	135.0	↑1.0
4/20 09:50	135.4	↑0.4	満潮
4/20 10:00	135.4	0
4/20 10:10	134.9	↓-0.5
4/20 10:20	134.0	↓-0.9
4/20 10:30	132.5	↓-1.5
4/20 10:40	130.7	↓-1.8
4/20 10:50	128.3	↓-2.4
4/20 11:00	125.5	↓-2.8
4/20 11:10	122.3	↓-3.2
4/20 11:20	118.8	↓-3.5
4/20 11:30	114.8	↓-4.0
4/20 11:40	110.5	↓-4.3
4/20 11:50	105.9	↓-4.6
4/20 12:00	101.0	↓-4.9
4/20 12:10	95.9	↓-5.1
4/20 12:20	90.5	↓-5.4
4/20 12:30	85.0	↓-5.5
4/20 12:40	79.3	↓-5.7
4/20 12:50	73.6	↓-5.7
4/20 13:00	67.8	↓-5.8
4/20 13:10	61.9	↓-5.9	最大潮位差
4/20 13:20	56.1	↓-5.8
4/20 13:30	50.4	↓-5.7
4/20 13:40	44.7	↓-5.7
4/20 13:50	39.2	↓-5.5
4/20 14:00	33.9	↓-5.3
4/20 14:10	28.8	↓-5.1
4/20 14:20	23.9	↓-4.9
4/20 14:30	19.4	↓-4.5
4/20 14:40	15.1	↓-4.3
4/20 14:50	11.2	↓-3.9
4/20 15:00	7.7	↓-3.5
4/20 15:10	4.6	↓-3.1
4/20 15:20	1.9	↓-2.7
4/20 15:30	-0.4	↓-2.3
4/20 15:40	-2.2	↓-1.8
4/20 15:50	-3.6	↓-1.4
4/20 16:00	-4.5	↓-0.9
4/20 16:10	-4.9	↓-0.4	干潮
4/20 16:20	-4.8	↑0.1
4/20 16:30	-4.2	↑0.6
4/20 16:40	-3.2	↑1.0
4/20 16:50	-1.7	↑1.5
4/20 17:00	0.2	↑1.9
4/20 17:10	2.6	↑2.4
4/20 17:20	5.4	↑2.8
4/20 17:30	8.6	↑3.2
4/20 17:40	12.2	↑3.6
4/20 17:50	16.2	↑4.0
4/20 18:00	20.4	↑4.2
4/20 18:10	25.0	↑4.6
4/20 18:20	29.8	↑4.8
4/20 18:30	34.8	↑5.0
4/20 18:40	40.0	↑5.2
4/20 18:50	45.4	↑5.4
4/20 19:00	50.9	↑5.5
4/20 19:10	56.5	↑5.6
4/20 19:20	62.1	↑5.6
4/20 19:30	67.7	↑5.6
4/20 19:40	73.2	↑5.5
4/20 19:50	78.7	↑5.5
4/20 20:00	84.0	↑5.3
4/20 20:10	89.2	↑5.2
4/20 20:20	94.2	↑5.0
4/20 20:30	99.0	↑4.8
4/20 20:40	103.5	↑4.5
4/20 20:50	107.7	↑4.2
4/20 21:00	111.6	↑3.9
4/20 21:10	115.2	↑3.6
4/20 21:20	118.4	↑3.2
4/20 21:30	121.2	↑2.8
4/20 21:40	123.6	↑2.4
4/20 21:50	125.6	↑2.0
4/20 22:00	127.1	↑1.5
4/20 22:10	128.2	↑1.1
4/20 22:20	128.9	↑0.7
4/20 22:30	129.1	↑0.2	満潮
4/20 22:40	128.9	↓-0.2
4/20 22:50	128.2	↓-0.7
4/20 23:00	127.1	↓-1.1
4/20 23:10	125.6	↓-1.5
4/20 23:20	123.6	↓-2.0
4/20 23:30	121.3	↓-2.3
4/20 23:40	118.6	↓-2.7
4/20 23:50	115.6	↓-3.0