20 (土)	08:04	02:13	21:17	14:45
	211cm	49cm	193cm	-15cm
中潮 出 06:03 入 18:57 出 21:31 入 07:23 潮干狩り ◎ 12:26～17:05

那覇（沖縄）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	97.4	↓-6.5
4/20 00:10	91.1	↓-6.3
4/20 00:20	85.1	↓-6.0
4/20 00:30	79.4	↓-5.7
4/20 00:40	74.0	↓-5.4
4/20 00:50	69.1	↓-4.9
4/20 01:00	64.6	↓-4.5
4/20 01:10	60.6	↓-4.0
4/20 01:20	57.2	↓-3.4
4/20 01:30	54.3	↓-2.9
4/20 01:40	52.0	↓-2.3
4/20 01:50	50.3	↓-1.7
4/20 02:00	49.2	↓-1.1
4/20 02:10	48.7	↓-0.5	干潮
4/20 02:20	48.9	↑0.2
4/20 02:30	49.7	↑0.8
4/20 02:40	51.1	↑1.4
4/20 02:50	53.1	↑2.0
4/20 03:00	55.7	↑2.6
4/20 03:10	58.9	↑3.2
4/20 03:20	62.6	↑3.7
4/20 03:30	66.9	↑4.3
4/20 03:40	71.7	↑4.8
4/20 03:50	76.9	↑5.2
4/20 04:00	82.5	↑5.6
4/20 04:10	88.6	↑6.1
4/20 04:20	94.9	↑6.3
4/20 04:30	101.5	↑6.6
4/20 04:40	108.4	↑6.9
4/20 04:50	115.4	↑7.0
4/20 05:00	122.6	↑7.2
4/20 05:10	129.8	↑7.2
4/20 05:20	137.1	↑7.3
4/20 05:30	144.2	↑7.1
4/20 05:40	151.3	↑7.1
4/20 05:50	158.2	↑6.9
4/20 06:00	164.9	↑6.7
4/20 06:10	171.3	↑6.4
4/20 06:20	177.4	↑6.1
4/20 06:30	183.1	↑5.7
4/20 06:40	188.3	↑5.2
4/20 06:50	193.1	↑4.8
4/20 07:00	197.3	↑4.2
4/20 07:10	201.0	↑3.7
4/20 07:20	204.1	↑3.1
4/20 07:30	206.5	↑2.4
4/20 07:40	208.4	↑1.9
4/20 07:50	209.6	↑1.2
4/20 08:00	210.1	↑0.5	満潮
4/20 08:10	209.9	↓-0.2
4/20 08:20	209.1	↓-0.8
4/20 08:30	207.6	↓-1.5
4/20 08:40	205.4	↓-2.2
4/20 08:50	202.6	↓-2.8
4/20 09:00	199.1	↓-3.5
4/20 09:10	195.1	↓-4.0
4/20 09:20	190.4	↓-4.7
4/20 09:30	185.2	↓-5.2
4/20 09:40	179.4	↓-5.8
4/20 09:50	173.2	↓-6.2
4/20 10:00	166.5	↓-6.7
4/20 10:10	159.4	↓-7.1
4/20 10:20	151.9	↓-7.5
4/20 10:30	144.1	↓-7.8
4/20 10:40	136.0	↓-8.1
4/20 10:50	127.6	↓-8.4
4/20 11:00	119.0	↓-8.6
4/20 11:10	110.3	↓-8.7
4/20 11:20	101.6	↓-8.7
4/20 11:30	92.7	↓-8.9	最大潮位差
4/20 11:40	83.9	↓-8.8
4/20 11:50	75.2	↓-8.7
4/20 12:00	66.6	↓-8.6
4/20 12:10	58.2	↓-8.4
4/20 12:20	50.0	↓-8.2
4/20 12:30	42.1	↓-7.9
4/20 12:40	34.6	↓-7.5
4/20 12:50	27.4	↓-7.2
4/20 13:00	20.7	↓-6.7
4/20 13:10	14.4	↓-6.3
4/20 13:20	8.7	↓-5.7
4/20 13:30	3.5	↓-5.2
4/20 13:40	-1.1	↓-4.6
4/20 13:50	-5.1	↓-4.0
4/20 14:00	-8.4	↓-3.3
4/20 14:10	-11.1	↓-2.7
4/20 14:20	-13.1	↓-2.0
4/20 14:30	-14.4	↓-1.3
4/20 14:40	-15.0	↓-0.6	干潮
4/20 14:50	-15.0	0
4/20 15:00	-14.2	↑0.8
4/20 15:10	-12.8	↑1.4
4/20 15:20	-10.6	↑2.2
4/20 15:30	-7.9	↑2.7
4/20 15:40	-4.4	↑3.5
4/20 15:50	-0.4	↑4.0
4/20 16:00	4.2	↑4.6
4/20 16:10	9.4	↑5.2
4/20 16:20	15.1	↑5.7
4/20 16:30	21.2	↑6.1
4/20 16:40	27.9	↑6.7
4/20 16:50	34.9	↑7.0
4/20 17:00	42.3	↑7.4
4/20 17:10	50.0	↑7.7
4/20 17:20	57.9	↑7.9
4/20 17:30	66.1	↑8.2
4/20 17:40	74.4	↑8.3
4/20 17:50	82.7	↑8.3
4/20 18:00	91.2	↑8.5
4/20 18:10	99.6	↑8.4
4/20 18:20	107.9	↑8.3
4/20 18:30	116.1	↑8.2
4/20 18:40	124.1	↑8.0
4/20 18:50	131.9	↑7.8
4/20 19:00	139.3	↑7.4
4/20 19:10	146.4	↑7.1
4/20 19:20	153.2	↑6.8
4/20 19:30	159.5	↑6.3
4/20 19:40	165.3	↑5.8
4/20 19:50	170.6	↑5.3
4/20 20:00	175.4	↑4.8
4/20 20:10	179.7	↑4.3
4/20 20:20	183.3	↑3.6
4/20 20:30	186.4	↑3.1
4/20 20:40	188.9	↑2.5
4/20 20:50	190.7	↑1.8
4/20 21:00	191.9	↑1.2
4/20 21:10	192.6	↑0.7	満潮
4/20 21:20	192.6	0
4/20 21:30	192.1	↓-0.5
4/20 21:40	190.9	↓-1.2
4/20 21:50	189.2	↓-1.7
4/20 22:00	187.0	↓-2.2
4/20 22:10	184.2	↓-2.8
4/20 22:20	181.0	↓-3.2
4/20 22:30	177.3	↓-3.7
4/20 22:40	173.2	↓-4.1
4/20 22:50	168.6	↓-4.6
4/20 23:00	163.8	↓-4.8
4/20 23:10	158.6	↓-5.2
4/20 23:20	153.1	↓-5.5
4/20 23:30	147.5	↓-5.6
4/20 23:40	141.6	↓-5.9
4/20 23:50	135.7	↓-5.9