20 (火)	06:33	00:33	19:15	12:55
	185cm	43cm	182cm	13cm
大潮 出 06:14 入 19:04 出 18:32 入 05:21 潮干狩り ◎ 11:10～14:39

長山（沖縄）2027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	45.0	↓-1.9
4/20 00:10	43.6	↓-1.4
4/20 00:20	42.7	↓-0.9
4/20 00:30	42.3	↓-0.4	干潮
4/20 00:40	42.4	↑0.1
4/20 00:50	43.1	↑0.7
4/20 01:00	44.3	↑1.2
4/20 01:10	46.0	↑1.7
4/20 01:20	48.2	↑2.2
4/20 01:30	50.8	↑2.6
4/20 01:40	54.0	↑3.2
4/20 01:50	57.6	↑3.6
4/20 02:00	61.6	↑4.0
4/20 02:10	66.0	↑4.4
4/20 02:20	70.8	↑4.8
4/20 02:30	75.8	↑5.0
4/20 02:40	81.2	↑5.4
4/20 02:50	86.8	↑5.6
4/20 03:00	92.7	↑5.9
4/20 03:10	98.7	↑6.0
4/20 03:20	104.8	↑6.1
4/20 03:30	111.0	↑6.2
4/20 03:40	117.2	↑6.2
4/20 03:50	123.3	↑6.1
4/20 04:00	129.5	↑6.2
4/20 04:10	135.5	↑6.0
4/20 04:20	141.3	↑5.8
4/20 04:30	146.9	↑5.6
4/20 04:40	152.3	↑5.4
4/20 04:50	157.4	↑5.1
4/20 05:00	162.1	↑4.7
4/20 05:10	166.5	↑4.4
4/20 05:20	170.5	↑4.0
4/20 05:30	174.0	↑3.5
4/20 05:40	177.0	↑3.0
4/20 05:50	179.6	↑2.6
4/20 06:00	181.6	↑2.0
4/20 06:10	183.1	↑1.5
4/20 06:20	184.1	↑1.0
4/20 06:30	184.5	↑0.4	満潮
4/20 06:40	184.3	↓-0.2
4/20 06:50	183.5	↓-0.8
4/20 07:00	182.2	↓-1.3
4/20 07:10	180.3	↓-1.9
4/20 07:20	177.9	↓-2.4
4/20 07:30	174.9	↓-3.0
4/20 07:40	171.4	↓-3.5
4/20 07:50	167.4	↓-4.0
4/20 08:00	163.0	↓-4.4
4/20 08:10	158.1	↓-4.9
4/20 08:20	152.8	↓-5.3
4/20 08:30	147.1	↓-5.7
4/20 08:40	141.1	↓-6.0
4/20 08:50	134.8	↓-6.3
4/20 09:00	128.3	↓-6.5
4/20 09:10	121.6	↓-6.7
4/20 09:20	114.7	↓-6.9
4/20 09:30	107.6	↓-7.1	最大潮位差
4/20 09:40	100.6	↓-7.0
4/20 09:50	93.5	↓-7.1	最大潮位差
4/20 10:00	86.4	↓-7.1	最大潮位差
4/20 10:10	79.4	↓-7.0
4/20 10:20	72.6	↓-6.8
4/20 10:30	65.9	↓-6.7
4/20 10:40	59.4	↓-6.5
4/20 10:50	53.2	↓-6.2
4/20 11:00	47.3	↓-5.9
4/20 11:10	41.8	↓-5.5
4/20 11:20	36.6	↓-5.2
4/20 11:30	31.9	↓-4.7
4/20 11:40	27.6	↓-4.3
4/20 11:50	23.8	↓-3.8
4/20 12:00	20.4	↓-3.4
4/20 12:10	17.7	↓-2.7
4/20 12:20	15.4	↓-2.3
4/20 12:30	13.7	↓-1.7
4/20 12:40	12.6	↓-1.1
4/20 12:50	12.1	↓-0.5	干潮
4/20 13:00	12.1	0
4/20 13:10	12.8	↑0.7
4/20 13:20	14.0	↑1.2
4/20 13:30	15.7	↑1.7
4/20 13:40	18.1	↑2.4
4/20 13:50	20.9	↑2.8
4/20 14:00	24.3	↑3.4
4/20 14:10	28.2	↑3.9
4/20 14:20	32.6	↑4.4
4/20 14:30	37.4	↑4.8
4/20 14:40	42.6	↑5.2
4/20 14:50	48.2	↑5.6
4/20 15:00	54.1	↑5.9
4/20 15:10	60.3	↑6.2
4/20 15:20	66.8	↑6.5
4/20 15:30	73.4	↑6.6
4/20 15:40	80.3	↑6.9
4/20 15:50	87.2	↑6.9
4/20 16:00	94.2	↑7.0
4/20 16:10	101.2	↑7.0
4/20 16:20	108.2	↑7.0
4/20 16:30	115.1	↑6.9
4/20 16:40	121.9	↑6.8
4/20 16:50	128.5	↑6.6
4/20 17:00	134.8	↑6.3
4/20 17:10	140.9	↑6.1
4/20 17:20	146.7	↑5.8
4/20 17:30	152.2	↑5.5
4/20 17:40	157.2	↑5.0
4/20 17:50	161.9	↑4.7
4/20 18:00	166.1	↑4.2
4/20 18:10	169.8	↑3.7
4/20 18:20	173.0	↑3.2
4/20 18:30	175.7	↑2.7
4/20 18:40	177.9	↑2.2
4/20 18:50	179.5	↑1.6
4/20 19:00	180.5	↑1.0
4/20 19:10	181.0	↑0.5	満潮
4/20 19:20	181.0	0
4/20 19:30	180.4	↓-0.6
4/20 19:40	179.3	↓-1.1
4/20 19:50	177.6	↓-1.7
4/20 20:00	175.4	↓-2.2
4/20 20:10	172.7	↓-2.7
4/20 20:20	169.6	↓-3.1
4/20 20:30	166.0	↓-3.6
4/20 20:40	162.1	↓-3.9
4/20 20:50	157.7	↓-4.4
4/20 21:00	153.0	↓-4.7
4/20 21:10	148.0	↓-5.0
4/20 21:20	142.8	↓-5.2
4/20 21:30	137.3	↓-5.5
4/20 21:40	131.7	↓-5.6
4/20 21:50	126.0	↓-5.7
4/20 22:00	120.1	↓-5.9
4/20 22:10	114.3	↓-5.8
4/20 22:20	108.4	↓-5.9
4/20 22:30	102.6	↓-5.8
4/20 22:40	96.9	↓-5.7
4/20 22:50	91.4	↓-5.5
4/20 23:00	86.0	↓-5.4
4/20 23:10	80.9	↓-5.1
4/20 23:20	76.1	↓-4.8
4/20 23:30	71.5	↓-4.6
4/20 23:40	67.4	↓-4.1
4/20 23:50	63.5	↓-3.9