20 (日)	06:30	00:28	19:09	12:51
	167cm	45cm	165cm	22cm
大潮 出 06:13 入 19:04 出 04:57 入 17:48 潮干狩り ○ 11:24～14:17

池間（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	46.1	↓-1.4
4/20 00:10	45.1	↓-1.0
4/20 00:20	44.6	↓-0.5	干潮
4/20 00:30	44.5	↓-0.1
4/20 00:40	44.9	↑0.4
4/20 00:50	45.7	↑0.8
4/20 01:00	47.0	↑1.3
4/20 01:10	48.7	↑1.7
4/20 01:20	50.9	↑2.2
4/20 01:30	53.4	↑2.5
4/20 01:40	56.3	↑2.9
4/20 01:50	59.6	↑3.3
4/20 02:00	63.3	↑3.7
4/20 02:10	67.2	↑3.9
4/20 02:20	71.5	↑4.3
4/20 02:30	76.0	↑4.5
4/20 02:40	80.7	↑4.7
4/20 02:50	85.6	↑4.9
4/20 03:00	90.7	↑5.1
4/20 03:10	95.9	↑5.2
4/20 03:20	101.1	↑5.2
4/20 03:30	106.4	↑5.3
4/20 03:40	111.6	↑5.2
4/20 03:50	116.8	↑5.2
4/20 04:00	122.0	↑5.2
4/20 04:10	127.0	↑5.0
4/20 04:20	131.8	↑4.8
4/20 04:30	136.5	↑4.7
4/20 04:40	140.9	↑4.4
4/20 04:50	145.0	↑4.1
4/20 05:00	148.9	↑3.9
4/20 05:10	152.4	↑3.5
4/20 05:20	155.6	↑3.2
4/20 05:30	158.4	↑2.8
4/20 05:40	160.8	↑2.4
4/20 05:50	162.7	↑1.9
4/20 06:00	164.3	↑1.6
4/20 06:10	165.4	↑1.1
4/20 06:20	166.0	↑0.6	満潮
4/20 06:30	166.2	↑0.2	満潮
4/20 06:40	165.9	↓-0.3
4/20 06:50	165.2	↓-0.7
4/20 07:00	163.9	↓-1.3
4/20 07:10	162.3	↓-1.6
4/20 07:20	160.1	↓-2.2
4/20 07:30	157.5	↓-2.6
4/20 07:40	154.5	↓-3.0
4/20 07:50	151.1	↓-3.4
4/20 08:00	147.4	↓-3.7
4/20 08:10	143.2	↓-4.2
4/20 08:20	138.7	↓-4.5
4/20 08:30	133.9	↓-4.8
4/20 08:40	128.9	↓-5.0
4/20 08:50	123.6	↓-5.3
4/20 09:00	118.1	↓-5.5
4/20 09:10	112.4	↓-5.7
4/20 09:20	106.6	↓-5.8
4/20 09:30	100.6	↓-6.0	最大潮位差
4/20 09:40	94.7	↓-5.9
4/20 09:50	88.7	↓-6.0	最大潮位差
4/20 10:00	82.7	↓-6.0	最大潮位差
4/20 10:10	76.8	↓-5.9
4/20 10:20	71.1	↓-5.7
4/20 10:30	65.4	↓-5.7
4/20 10:40	60.0	↓-5.4
4/20 10:50	54.8	↓-5.2
4/20 11:00	49.8	↓-5.0
4/20 11:10	45.2	↓-4.6
4/20 11:20	40.9	↓-4.3
4/20 11:30	37.0	↓-3.9
4/20 11:40	33.4	↓-3.6
4/20 11:50	30.3	↓-3.1
4/20 12:00	27.6	↓-2.7
4/20 12:10	25.4	↓-2.2
4/20 12:20	23.6	↓-1.8
4/20 12:30	22.4	↓-1.2
4/20 12:40	21.6	↓-0.8
4/20 12:50	21.4	↓-0.2	干潮
4/20 13:00	21.6	↑0.2
4/20 13:10	22.4	↑0.8
4/20 13:20	23.7	↑1.3
4/20 13:30	25.4	↑1.7
4/20 13:40	27.7	↑2.3
4/20 13:50	30.4	↑2.7
4/20 14:00	33.5	↑3.1
4/20 14:10	37.1	↑3.6
4/20 14:20	41.0	↑3.9
4/20 14:30	45.3	↑4.3
4/20 14:40	50.0	↑4.7
4/20 14:50	54.9	↑4.9
4/20 15:00	60.2	↑5.3
4/20 15:10	65.6	↑5.4
4/20 15:20	71.2	↑5.6
4/20 15:30	77.0	↑5.8
4/20 15:40	82.9	↑5.9
4/20 15:50	88.8	↑5.9
4/20 16:00	94.8	↑6.0	最大潮位差
4/20 16:10	100.7	↑5.9
4/20 16:20	106.6	↑5.9
4/20 16:30	112.4	↑5.8
4/20 16:40	118.0	↑5.6
4/20 16:50	123.5	↑5.5
4/20 17:00	128.7	↑5.2
4/20 17:10	133.7	↑5.0
4/20 17:20	138.4	↑4.7
4/20 17:30	142.8	↑4.4
4/20 17:40	146.9	↑4.1
4/20 17:50	150.6	↑3.7
4/20 18:00	153.9	↑3.3
4/20 18:10	156.8	↑2.9
4/20 18:20	159.2	↑2.4
4/20 18:30	161.2	↑2.0
4/20 18:40	162.8	↑1.6
4/20 18:50	163.9	↑1.1
4/20 19:00	164.5	↑0.6	満潮
4/20 19:10	164.7	↑0.2
4/20 19:20	164.4	↓-0.3
4/20 19:30	163.6	↓-0.8
4/20 19:40	162.4	↓-1.2
4/20 19:50	160.7	↓-1.7
4/20 20:00	158.6	↓-2.1
4/20 20:10	156.1	↓-2.5
4/20 20:20	153.2	↓-2.9
4/20 20:30	149.9	↓-3.3
4/20 20:40	146.3	↓-3.6
4/20 20:50	142.3	↓-4.0
4/20 21:00	138.1	↓-4.2
4/20 21:10	133.7	↓-4.4
4/20 21:20	129.0	↓-4.7
4/20 21:30	124.1	↓-4.9
4/20 21:40	119.1	↓-5.0
4/20 21:50	113.9	↓-5.2
4/20 22:00	108.8	↓-5.1
4/20 22:10	103.5	↓-5.3
4/20 22:20	98.3	↓-5.2
4/20 22:30	93.2	↓-5.1
4/20 22:40	88.1	↓-5.1
4/20 22:50	83.2	↓-4.9
4/20 23:00	78.5	↓-4.7
4/20 23:10	73.9	↓-4.6
4/20 23:20	69.7	↓-4.2
4/20 23:30	65.7	↓-4.0
4/20 23:40	62.0	↓-3.7
4/20 23:50	58.6	↓-3.4