20 (日)	07:05	01:07	19:47	13:25
	191cm	34cm	193cm	3cm
大潮 出 06:13 入 19:04 出 06:10 入 19:20 潮干狩り ◎ 11:29～15:19

長山（沖縄）2042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	46.3	↓-3.9
4/20 00:10	42.8	↓-3.5
4/20 00:20	39.9	↓-2.9
4/20 00:30	37.6	↓-2.3
4/20 00:40	35.8	↓-1.8
4/20 00:50	34.6	↓-1.2
4/20 01:00	34.0	↓-0.6	干潮
4/20 01:10	33.9	↓-0.1
4/20 01:20	34.5	↑0.6
4/20 01:30	35.6	↑1.1
4/20 01:40	37.3	↑1.7
4/20 01:50	39.6	↑2.3
4/20 02:00	42.4	↑2.8
4/20 02:10	45.8	↑3.4
4/20 02:20	49.6	↑3.8
4/20 02:30	54.0	↑4.4
4/20 02:40	58.7	↑4.7
4/20 02:50	63.9	↑5.2
4/20 03:00	69.5	↑5.6
4/20 03:10	75.4	↑5.9
4/20 03:20	81.5	↑6.1
4/20 03:30	87.9	↑6.4
4/20 03:40	94.5	↑6.6
4/20 03:50	101.2	↑6.7
4/20 04:00	108.0	↑6.8
4/20 04:10	114.9	↑6.9
4/20 04:20	121.7	↑6.8
4/20 04:30	128.5	↑6.8
4/20 04:40	135.1	↑6.6
4/20 04:50	141.6	↑6.5
4/20 05:00	147.9	↑6.3
4/20 05:10	153.9	↑6.0
4/20 05:20	159.6	↑5.7
4/20 05:30	164.9	↑5.3
4/20 05:40	169.8	↑4.9
4/20 05:50	174.2	↑4.4
4/20 06:00	178.2	↑4.0
4/20 06:10	181.7	↑3.5
4/20 06:20	184.6	↑2.9
4/20 06:30	187.0	↑2.4
4/20 06:40	188.8	↑1.8
4/20 06:50	189.9	↑1.1
4/20 07:00	190.5	↑0.6	満潮
4/20 07:10	190.4	↓-0.1
4/20 07:20	189.7	↓-0.7
4/20 07:30	188.4	↓-1.3
4/20 07:40	186.5	↓-1.9
4/20 07:50	183.9	↓-2.6
4/20 08:00	180.8	↓-3.1
4/20 08:10	177.1	↓-3.7
4/20 08:20	172.8	↓-4.3
4/20 08:30	168.0	↓-4.8
4/20 08:40	162.7	↓-5.3
4/20 08:50	157.0	↓-5.7
4/20 09:00	150.8	↓-6.2
4/20 09:10	144.3	↓-6.5
4/20 09:20	137.5	↓-6.8
4/20 09:30	130.3	↓-7.2
4/20 09:40	122.9	↓-7.4
4/20 09:50	115.4	↓-7.5
4/20 10:00	107.7	↓-7.7
4/20 10:10	99.9	↓-7.8	最大潮位差
4/20 10:20	92.1	↓-7.8	最大潮位差
4/20 10:30	84.3	↓-7.8	最大潮位差
4/20 10:40	76.7	↓-7.6
4/20 10:50	69.1	↓-7.6
4/20 11:00	61.7	↓-7.4
4/20 11:10	54.6	↓-7.1
4/20 11:20	47.8	↓-6.8
4/20 11:30	41.3	↓-6.5
4/20 11:40	35.1	↓-6.2
4/20 11:50	29.4	↓-5.7
4/20 12:00	24.2	↓-5.2
4/20 12:10	19.4	↓-4.8
4/20 12:20	15.2	↓-4.2
4/20 12:30	11.5	↓-3.7
4/20 12:40	8.4	↓-3.1
4/20 12:50	6.0	↓-2.4
4/20 13:00	4.1	↓-1.9
4/20 13:10	2.9	↓-1.2
4/20 13:20	2.3	↓-0.6	干潮
4/20 13:30	2.4	↑0.1
4/20 13:40	3.1	↑0.7
4/20 13:50	4.4	↑1.3
4/20 14:00	6.4	↑2.0
4/20 14:10	9.0	↑2.6
4/20 14:20	12.3	↑3.3
4/20 14:30	16.1	↑3.8
4/20 14:40	20.4	↑4.3
4/20 14:50	25.3	↑4.9
4/20 15:00	30.6	↑5.3
4/20 15:10	36.5	↑5.9
4/20 15:20	42.7	↑6.2
4/20 15:30	49.3	↑6.6
4/20 15:40	56.2	↑6.9
4/20 15:50	63.4	↑7.2
4/20 16:00	70.9	↑7.5
4/20 16:10	78.5	↑7.6
4/20 16:20	86.2	↑7.7
4/20 16:30	94.0	↑7.8	最大潮位差
4/20 16:40	101.8	↑7.8	最大潮位差
4/20 16:50	109.6	↑7.8	最大潮位差
4/20 17:00	117.3	↑7.7
4/20 17:10	124.9	↑7.6
4/20 17:20	132.3	↑7.4
4/20 17:30	139.4	↑7.1
4/20 17:40	146.2	↑6.8
4/20 17:50	152.7	↑6.5
4/20 18:00	158.9	↑6.2
4/20 18:10	164.5	↑5.6
4/20 18:20	169.8	↑5.3
4/20 18:30	174.5	↑4.7
4/20 18:40	178.7	↑4.2
4/20 18:50	182.4	↑3.7
4/20 19:00	185.5	↑3.1
4/20 19:10	188.0	↑2.5
4/20 19:20	189.9	↑1.9
4/20 19:30	191.2	↑1.3
4/20 19:40	191.9	↑0.7	満潮
4/20 19:50	192.0	↑0.1
4/20 20:00	191.4	↓-0.6
4/20 20:10	190.2	↓-1.2
4/20 20:20	188.5	↓-1.7
4/20 20:30	186.2	↓-2.3
4/20 20:40	183.3	↓-2.9
4/20 20:50	179.9	↓-3.4
4/20 21:00	176.0	↓-3.9
4/20 21:10	171.7	↓-4.3
4/20 21:20	166.9	↓-4.8
4/20 21:30	161.7	↓-5.2
4/20 21:40	156.2	↓-5.5
4/20 21:50	150.4	↓-5.8
4/20 22:00	144.4	↓-6.0
4/20 22:10	138.1	↓-6.3
4/20 22:20	131.7	↓-6.4
4/20 22:30	125.2	↓-6.5
4/20 22:40	118.6	↓-6.6
4/20 22:50	112.0	↓-6.6
4/20 23:00	105.5	↓-6.5
4/20 23:10	99.1	↓-6.4
4/20 23:20	92.8	↓-6.3
4/20 23:30	86.7	↓-6.1
4/20 23:40	80.9	↓-5.8
4/20 23:50	75.3	↓-5.6