31 (木)	08:33	01:55	19:36	13:48
	151cm	-7cm	177cm	73cm
大潮 出 07:23 入 18:02 出 19:04 入 08:12

長山（沖縄）2020年12月31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
12/31 00:00	24.7	↓-5.5
12/31 00:10	19.6	↓-5.1
12/31 00:20	14.9	↓-4.7
12/31 00:30	10.5	↓-4.4
12/31 00:40	6.6	↓-3.9
12/31 00:50	3.1	↓-3.5
12/31 01:00	0.1	↓-3.0
12/31 01:10	-2.4	↓-2.5
12/31 01:20	-4.4	↓-2.0
12/31 01:30	-5.9	↓-1.5
12/31 01:40	-6.9	↓-1.0
12/31 01:50	-7.3	↓-0.4	干潮
12/31 02:00	-7.3	0
12/31 02:10	-6.7	↑0.6
12/31 02:20	-5.6	↑1.1
12/31 02:30	-3.9	↑1.7
12/31 02:40	-1.8	↑2.1
12/31 02:50	0.8	↑2.6
12/31 03:00	3.8	↑3.0
12/31 03:10	7.3	↑3.5
12/31 03:20	11.2	↑3.9
12/31 03:30	15.5	↑4.3
12/31 03:40	20.2	↑4.7
12/31 03:50	25.1	↑4.9
12/31 04:00	30.4	↑5.3
12/31 04:10	35.9	↑5.5
12/31 04:20	41.7	↑5.8
12/31 04:30	47.6	↑5.9
12/31 04:40	53.7	↑6.1
12/31 04:50	59.8	↑6.1
12/31 05:00	66.1	↑6.3
12/31 05:10	72.3	↑6.2
12/31 05:20	78.6	↑6.3
12/31 05:30	84.8	↑6.2
12/31 05:40	90.9	↑6.1
12/31 05:50	96.8	↑5.9
12/31 06:00	102.6	↑5.8
12/31 06:10	108.2	↑5.6
12/31 06:20	113.5	↑5.3
12/31 06:30	118.6	↑5.1
12/31 06:40	123.3	↑4.7
12/31 06:50	127.8	↑4.5
12/31 07:00	131.8	↑4.0
12/31 07:10	135.5	↑3.7
12/31 07:20	138.9	↑3.4
12/31 07:30	141.8	↑2.9
12/31 07:40	144.2	↑2.4
12/31 07:50	146.3	↑2.1
12/31 08:00	147.9	↑1.6
12/31 08:10	149.1	↑1.2
12/31 08:20	149.8	↑0.7
12/31 08:30	150.1	↑0.3	満潮
12/31 08:40	150.0	↓-0.1
12/31 08:50	149.5	↓-0.5
12/31 09:00	148.6	↓-0.9
12/31 09:10	147.2	↓-1.4
12/31 09:20	145.5	↓-1.7
12/31 09:30	143.5	↓-2.0
12/31 09:40	141.2	↓-2.3
12/31 09:50	138.5	↓-2.7
12/31 10:00	135.6	↓-2.9
12/31 10:10	132.5	↓-3.1
12/31 10:20	129.2	↓-3.3
12/31 10:30	125.7	↓-3.5
12/31 10:40	122.0	↓-3.7
12/31 10:50	118.3	↓-3.7
12/31 11:00	114.5	↓-3.8
12/31 11:10	110.7	↓-3.8
12/31 11:20	106.9	↓-3.8
12/31 11:30	103.1	↓-3.8
12/31 11:40	99.4	↓-3.7
12/31 11:50	95.9	↓-3.5
12/31 12:00	92.5	↓-3.4
12/31 12:10	89.2	↓-3.3
12/31 12:20	86.2	↓-3.0
12/31 12:30	83.5	↓-2.7
12/31 12:40	80.9	↓-2.6
12/31 12:50	78.7	↓-2.2
12/31 13:00	76.8	↓-1.9
12/31 13:10	75.3	↓-1.5
12/31 13:20	74.1	↓-1.2
12/31 13:30	73.2	↓-0.9
12/31 13:40	72.7	↓-0.5	干潮
12/31 13:50	72.7	0
12/31 14:00	73.0	↑0.3
12/31 14:10	73.6	↑0.6
12/31 14:20	74.7	↑1.1
12/31 14:30	76.2	↑1.5
12/31 14:40	78.0	↑1.8
12/31 14:50	80.2	↑2.2
12/31 15:00	82.7	↑2.5
12/31 15:10	85.6	↑2.9
12/31 15:20	88.8	↑3.2
12/31 15:30	92.2	↑3.4
12/31 15:40	95.9	↑3.7
12/31 15:50	99.9	↑4.0
12/31 16:00	104.1	↑4.2
12/31 16:10	108.4	↑4.3
12/31 16:20	112.9	↑4.5
12/31 16:30	117.5	↑4.6
12/31 16:40	122.1	↑4.6
12/31 16:50	126.8	↑4.7
12/31 17:00	131.5	↑4.7
12/31 17:10	136.1	↑4.6
12/31 17:20	140.7	↑4.6
12/31 17:30	145.1	↑4.4
12/31 17:40	149.4	↑4.3
12/31 17:50	153.5	↑4.1
12/31 18:00	157.3	↑3.8
12/31 18:10	160.9	↑3.6
12/31 18:20	164.2	↑3.3
12/31 18:30	167.2	↑3.0
12/31 18:40	169.8	↑2.6
12/31 18:50	172.0	↑2.2
12/31 19:00	173.8	↑1.8
12/31 19:10	175.2	↑1.4
12/31 19:20	176.2	↑1.0
12/31 19:30	176.7	↑0.5	満潮
12/31 19:40	176.7	0
12/31 19:50	176.2	↓-0.5
12/31 20:00	175.2	↓-1.0
12/31 20:10	173.8	↓-1.4
12/31 20:20	171.8	↓-2.0
12/31 20:30	169.4	↓-2.4
12/31 20:40	166.5	↓-2.9
12/31 20:50	163.1	↓-3.4
12/31 21:00	159.3	↓-3.8
12/31 21:10	155.0	↓-4.3
12/31 21:20	150.3	↓-4.7
12/31 21:30	145.2	↓-5.1
12/31 21:40	139.8	↓-5.4
12/31 21:50	134.0	↓-5.8
12/31 22:00	127.9	↓-6.1
12/31 22:10	121.6	↓-6.3
12/31 22:20	115.0	↓-6.6
12/31 22:30	108.2	↓-6.8
12/31 22:40	101.3	↓-6.9
12/31 22:50	94.3	↓-7.0
12/31 23:00	87.1	↓-7.2	最大潮位差
12/31 23:10	80.0	↓-7.1
12/31 23:20	72.8	↓-7.2	最大潮位差
12/31 23:30	65.7	↓-7.1
12/31 23:40	58.8	↓-6.9
12/31 23:50	51.9	↓-6.9