20 (日)	06:08	00:05	18:43	12:28
	193cm	46cm	188cm	19cm
大潮 出 06:03 入 18:56 出 04:47 入 17:39 潮干狩り ◎ 10:51～14:04

那覇（沖縄）2031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	46.0	↓-0.5	干潮
4/20 00:10	46.1	↑0.1
4/20 00:20	46.7	↑0.6
4/20 00:30	47.8	↑1.1
4/20 00:40	49.4	↑1.6
4/20 00:50	51.5	↑2.1
4/20 01:00	54.2	↑2.7
4/20 01:10	57.3	↑3.1
4/20 01:20	60.8	↑3.5
4/20 01:30	64.8	↑4.0
4/20 01:40	69.2	↑4.4
4/20 01:50	73.9	↑4.7
4/20 02:00	79.1	↑5.2
4/20 02:10	84.5	↑5.4
4/20 02:20	90.2	↑5.7
4/20 02:30	96.1	↑5.9
4/20 02:40	102.2	↑6.1
4/20 02:50	108.4	↑6.2
4/20 03:00	114.7	↑6.3
4/20 03:10	121.1	↑6.4
4/20 03:20	127.5	↑6.4
4/20 03:30	133.8	↑6.3
4/20 03:40	139.9	↑6.1
4/20 03:50	146.0	↑6.1
4/20 04:00	151.8	↑5.8
4/20 04:10	157.4	↑5.6
4/20 04:20	162.7	↑5.3
4/20 04:30	167.7	↑5.0
4/20 04:40	172.3	↑4.6
4/20 04:50	176.5	↑4.2
4/20 05:00	180.3	↑3.8
4/20 05:10	183.6	↑3.3
4/20 05:20	186.4	↑2.8
4/20 05:30	188.8	↑2.4
4/20 05:40	190.5	↑1.7
4/20 05:50	191.8	↑1.3
4/20 06:00	192.5	↑0.7	満潮
4/20 06:10	192.6	↑0.1
4/20 06:20	192.2	↓-0.4
4/20 06:30	191.2	↓-1.0
4/20 06:40	189.6	↓-1.6
4/20 06:50	187.5	↓-2.1
4/20 07:00	184.9	↓-2.6
4/20 07:10	181.7	↓-3.2
4/20 07:20	178.0	↓-3.7
4/20 07:30	173.8	↓-4.2
4/20 07:40	169.2	↓-4.6
4/20 07:50	164.1	↓-5.1
4/20 08:00	158.6	↓-5.5
4/20 08:10	152.8	↓-5.8
4/20 08:20	146.6	↓-6.2
4/20 08:30	140.1	↓-6.5
4/20 08:40	133.4	↓-6.7
4/20 08:50	126.5	↓-6.9
4/20 09:00	119.4	↓-7.1
4/20 09:10	112.3	↓-7.1
4/20 09:20	105.0	↓-7.3	最大潮位差
4/20 09:30	97.8	↓-7.2
4/20 09:40	90.6	↓-7.2
4/20 09:50	83.5	↓-7.1
4/20 10:00	76.5	↓-7.0
4/20 10:10	69.8	↓-6.7
4/20 10:20	63.3	↓-6.5
4/20 10:30	57.1	↓-6.2
4/20 10:40	51.2	↓-5.9
4/20 10:50	45.8	↓-5.4
4/20 11:00	40.7	↓-5.1
4/20 11:10	36.1	↓-4.6
4/20 11:20	32.0	↓-4.1
4/20 11:30	28.4	↓-3.6
4/20 11:40	25.3	↓-3.1
4/20 11:50	22.8	↓-2.5
4/20 12:00	20.9	↓-1.9
4/20 12:10	19.6	↓-1.3
4/20 12:20	18.8	↓-0.8	干潮
4/20 12:30	18.7	↓-0.1
4/20 12:40	19.2	↑0.5
4/20 12:50	20.3	↑1.1
4/20 13:00	21.9	↑1.6
4/20 13:10	24.2	↑2.3
4/20 13:20	27.0	↑2.8
4/20 13:30	30.4	↑3.4
4/20 13:40	34.3	↑3.9
4/20 13:50	38.7	↑4.4
4/20 14:00	43.5	↑4.8
4/20 14:10	48.8	↑5.3
4/20 14:20	54.5	↑5.7
4/20 14:30	60.5	↑6.0
4/20 14:40	66.8	↑6.3
4/20 14:50	73.4	↑6.6
4/20 15:00	80.2	↑6.8
4/20 15:10	87.2	↑7.0
4/20 15:20	94.2	↑7.0
4/20 15:30	101.3	↑7.1
4/20 15:40	108.4	↑7.1
4/20 15:50	115.5	↑7.1
4/20 16:00	122.5	↑7.0
4/20 16:10	129.3	↑6.8
4/20 16:20	135.9	↑6.6
4/20 16:30	142.3	↑6.4
4/20 16:40	148.3	↑6.0
4/20 16:50	154.1	↑5.8
4/20 17:00	159.5	↑5.4
4/20 17:10	164.4	↑4.9
4/20 17:20	169.0	↑4.6
4/20 17:30	173.0	↑4.0
4/20 17:40	176.6	↑3.6
4/20 17:50	179.7	↑3.1
4/20 18:00	182.3	↑2.6
4/20 18:10	184.3	↑2.0
4/20 18:20	185.8	↑1.5
4/20 18:30	186.7	↑0.9
4/20 18:40	187.1	↑0.4	満潮
4/20 18:50	187.0	↓-0.1
4/20 19:00	186.3	↓-0.7
4/20 19:10	185.1	↓-1.2
4/20 19:20	183.3	↓-1.8
4/20 19:30	181.1	↓-2.2
4/20 19:40	178.4	↓-2.7
4/20 19:50	175.2	↓-3.2
4/20 20:00	171.6	↓-3.6
4/20 20:10	167.5	↓-4.1
4/20 20:20	163.1	↓-4.4
4/20 20:30	158.4	↓-4.7
4/20 20:40	153.3	↓-5.1
4/20 20:50	148.0	↓-5.3
4/20 21:00	142.4	↓-5.6
4/20 21:10	136.6	↓-5.8
4/20 21:20	130.7	↓-5.9
4/20 21:30	124.6	↓-6.1
4/20 21:40	118.6	↓-6.0
4/20 21:50	112.5	↓-6.1
4/20 22:00	106.4	↓-6.1
4/20 22:10	100.5	↓-5.9
4/20 22:20	94.6	↓-5.9
4/20 22:30	89.0	↓-5.6
4/20 22:40	83.6	↓-5.4
4/20 22:50	78.4	↓-5.2
4/20 23:00	73.5	↓-4.9
4/20 23:10	69.0	↓-4.5
4/20 23:20	64.9	↓-4.1
4/20 23:30	61.1	↓-3.8
4/20 23:40	57.9	↓-3.2
4/20 23:50	55.0	↓-2.9