20 (日)	07:53	01:55	20:43	14:20
	194cm	42cm	185cm	2cm
大潮 出 06:13 入 19:04 出 07:21 入 20:39 潮干狩り ◎ 12:22～16:17

長山（沖縄）2053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	74.9	↓-5.6
4/20 00:10	69.7	↓-5.2
4/20 00:20	64.7	↓-5.0
4/20 00:30	60.2	↓-4.5
4/20 00:40	56.1	↓-4.1
4/20 00:50	52.4	↓-3.7
4/20 01:00	49.2	↓-3.2
4/20 01:10	46.5	↓-2.7
4/20 01:20	44.4	↓-2.1
4/20 01:30	42.8	↓-1.6
4/20 01:40	41.7	↓-1.1
4/20 01:50	41.2	↓-0.5	干潮
4/20 02:00	41.3	↑0.1
4/20 02:10	41.9	↑0.6
4/20 02:20	43.2	↑1.3
4/20 02:30	44.9	↑1.7
4/20 02:40	47.2	↑2.3
4/20 02:50	50.1	↑2.9
4/20 03:00	53.5	↑3.4
4/20 03:10	57.3	↑3.8
4/20 03:20	61.6	↑4.3
4/20 03:30	66.3	↑4.7
4/20 03:40	71.4	↑5.1
4/20 03:50	76.9	↑5.5
4/20 04:00	82.6	↑5.7
4/20 04:10	88.7	↑6.1
4/20 04:20	94.9	↑6.2
4/20 04:30	101.3	↑6.4
4/20 04:40	107.9	↑6.6
4/20 04:50	114.5	↑6.6
4/20 05:00	121.2	↑6.7
4/20 05:10	127.8	↑6.6
4/20 05:20	134.4	↑6.6
4/20 05:30	140.8	↑6.4
4/20 05:40	147.1	↑6.3
4/20 05:50	153.1	↑6.0
4/20 06:00	158.9	↑5.8
4/20 06:10	164.4	↑5.5
4/20 06:20	169.5	↑5.1
4/20 06:30	174.2	↑4.7
4/20 06:40	178.4	↑4.2
4/20 06:50	182.2	↑3.8
4/20 07:00	185.5	↑3.3
4/20 07:10	188.3	↑2.8
4/20 07:20	190.5	↑2.2
4/20 07:30	192.1	↑1.6
4/20 07:40	193.2	↑1.1
4/20 07:50	193.6	↑0.4	満潮
4/20 08:00	193.5	↓-0.1
4/20 08:10	192.7	↓-0.8
4/20 08:20	191.3	↓-1.4
4/20 08:30	189.3	↓-2.0
4/20 08:40	186.7	↓-2.6
4/20 08:50	183.5	↓-3.2
4/20 09:00	179.8	↓-3.7
4/20 09:10	175.5	↓-4.3
4/20 09:20	170.7	↓-4.8
4/20 09:30	165.5	↓-5.2
4/20 09:40	159.7	↓-5.8
4/20 09:50	153.6	↓-6.1
4/20 10:00	147.1	↓-6.5
4/20 10:10	140.2	↓-6.9
4/20 10:20	133.1	↓-7.1
4/20 10:30	125.7	↓-7.4
4/20 10:40	118.1	↓-7.6
4/20 10:50	110.4	↓-7.7
4/20 11:00	102.6	↓-7.8	最大潮位差
4/20 11:10	94.8	↓-7.8	最大潮位差
4/20 11:20	87.0	↓-7.8	最大潮位差
4/20 11:30	79.2	↓-7.8	最大潮位差
4/20 11:40	71.6	↓-7.6
4/20 11:50	64.1	↓-7.5
4/20 12:00	56.9	↓-7.2
4/20 12:10	49.9	↓-7.0
4/20 12:20	43.3	↓-6.6
4/20 12:30	37.0	↓-6.3
4/20 12:40	31.1	↓-5.9
4/20 12:50	25.7	↓-5.4
4/20 13:00	20.7	↓-5.0
4/20 13:10	16.2	↓-4.5
4/20 13:20	12.3	↓-3.9
4/20 13:30	9.0	↓-3.3
4/20 13:40	6.2	↓-2.8
4/20 13:50	4.1	↓-2.1
4/20 14:00	2.6	↓-1.5
4/20 14:10	1.7	↓-0.9	干潮
4/20 14:20	1.4	↓-0.3	干潮
4/20 14:30	1.8	↑0.4
4/20 14:40	2.8	↑1.0
4/20 14:50	4.5	↑1.7
4/20 15:00	6.7	↑2.2
4/20 15:10	9.6	↑2.9
4/20 15:20	13.0	↑3.4
4/20 15:30	17.0	↑4.0
4/20 15:40	21.5	↑4.5
4/20 15:50	26.4	↑4.9
4/20 16:00	31.9	↑5.5
4/20 16:10	37.7	↑5.8
4/20 16:20	44.0	↑6.3
4/20 16:30	50.5	↑6.5
4/20 16:40	57.4	↑6.9
4/20 16:50	64.4	↑7.0
4/20 17:00	71.7	↑7.3
4/20 17:10	79.1	↑7.4
4/20 17:20	86.6	↑7.5
4/20 17:30	94.1	↑7.5
4/20 17:40	101.7	↑7.6
4/20 17:50	109.1	↑7.4
4/20 18:00	116.4	↑7.3
4/20 18:10	123.6	↑7.2
4/20 18:20	130.5	↑6.9
4/20 18:30	137.2	↑6.7
4/20 18:40	143.6	↑6.4
4/20 18:50	149.6	↑6.0
4/20 19:00	155.3	↑5.7
4/20 19:10	160.5	↑5.2
4/20 19:20	165.3	↑4.8
4/20 19:30	169.6	↑4.3
4/20 19:40	173.3	↑3.7
4/20 19:50	176.6	↑3.3
4/20 20:00	179.3	↑2.7
4/20 20:10	181.4	↑2.1
4/20 20:20	183.0	↑1.6
4/20 20:30	183.9	↑0.9
4/20 20:40	184.3	↑0.4	満潮
4/20 20:50	184.1	↓-0.2
4/20 21:00	183.4	↓-0.7
4/20 21:10	182.1	↓-1.3
4/20 21:20	180.2	↓-1.9
4/20 21:30	177.8	↓-2.4
4/20 21:40	174.9	↓-2.9
4/20 21:50	171.6	↓-3.3
4/20 22:00	167.8	↓-3.8
4/20 22:10	163.5	↓-4.3
4/20 22:20	158.9	↓-4.6
4/20 22:30	154.0	↓-4.9
4/20 22:40	148.7	↓-5.3
4/20 22:50	143.2	↓-5.5
4/20 23:00	137.5	↓-5.7
4/20 23:10	131.6	↓-5.9
4/20 23:20	125.6	↓-6.0
4/20 23:30	119.6	↓-6.0
4/20 23:40	113.5	↓-6.1
4/20 23:50	107.4	↓-6.1