20 (木)	06:24	00:02	18:42	12:36
	169cm	49cm	169cm	49cm
若潮 出 05:46 入 18:59 出 03:09 入 14:51

島山（長崎）2028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	48.5	↓-0.2	干潮
4/20 00:10	48.6	↑0.1
4/20 00:20	49.2	↑0.6
4/20 00:30	50.1	↑0.9
4/20 00:40	51.4	↑1.3
4/20 00:50	53.1	↑1.7
4/20 01:00	55.1	↑2.0
4/20 01:10	57.5	↑2.4
4/20 01:20	60.3	↑2.8
4/20 01:30	63.3	↑3.0
4/20 01:40	66.7	↑3.4
4/20 01:50	70.3	↑3.6
4/20 02:00	74.3	↑4.0
4/20 02:10	78.4	↑4.1
4/20 02:20	82.7	↑4.3
4/20 02:30	87.2	↑4.5
4/20 02:40	91.9	↑4.7
4/20 02:50	96.7	↑4.8
4/20 03:00	101.6	↑4.9
4/20 03:10	106.5	↑4.9
4/20 03:20	111.4	↑4.9
4/20 03:30	116.3	↑4.9
4/20 03:40	121.2	↑4.9
4/20 03:50	125.9	↑4.7
4/20 04:00	130.6	↑4.7
4/20 04:10	135.1	↑4.5
4/20 04:20	139.4	↑4.3
4/20 04:30	143.6	↑4.2
4/20 04:40	147.4	↑3.8
4/20 04:50	151.0	↑3.6
4/20 05:00	154.4	↑3.4
4/20 05:10	157.4	↑3.0
4/20 05:20	160.0	↑2.6
4/20 05:30	162.3	↑2.3
4/20 05:40	164.3	↑2.0
4/20 05:50	165.8	↑1.5
4/20 06:00	166.9	↑1.1
4/20 06:10	167.7	↑0.8
4/20 06:20	168.0	↑0.3	満潮
4/20 06:30	167.9	↓-0.1
4/20 06:40	167.4	↓-0.5
4/20 06:50	166.4	↓-1.0
4/20 07:00	165.1	↓-1.3
4/20 07:10	163.4	↓-1.7
4/20 07:20	161.2	↓-2.2
4/20 07:30	158.7	↓-2.5
4/20 07:40	155.9	↓-2.8
4/20 07:50	152.7	↓-3.2
4/20 08:00	149.2	↓-3.5
4/20 08:10	145.4	↓-3.8
4/20 08:20	141.3	↓-4.1
4/20 08:30	137.0	↓-4.3
4/20 08:40	132.5	↓-4.5
4/20 08:50	127.8	↓-4.7
4/20 09:00	123.0	↓-4.8
4/20 09:10	118.0	↓-5.0
4/20 09:20	113.0	↓-5.0
4/20 09:30	108.0	↓-5.0
4/20 09:40	103.0	↓-5.0
4/20 09:50	98.0	↓-5.0
4/20 10:00	93.0	↓-5.0
4/20 10:10	88.2	↓-4.8
4/20 10:20	83.5	↓-4.7
4/20 10:30	79.0	↓-4.5
4/20 10:40	74.7	↓-4.3
4/20 10:50	70.6	↓-4.1
4/20 11:00	66.8	↓-3.8
4/20 11:10	63.3	↓-3.5
4/20 11:20	60.1	↓-3.2
4/20 11:30	57.2	↓-2.9
4/20 11:40	54.7	↓-2.5
4/20 11:50	52.7	↓-2.0
4/20 12:00	50.9	↓-1.8
4/20 12:10	49.7	↓-1.2
4/20 12:20	48.8	↓-0.9
4/20 12:30	48.4	↓-0.4	干潮
4/20 12:40	48.3	↓-0.1
4/20 12:50	48.8	↑0.5
4/20 13:00	49.6	↑0.8
4/20 13:10	50.9	↑1.3
4/20 13:20	52.6	↑1.7
4/20 13:30	54.7	↑2.1
4/20 13:40	57.2	↑2.5
4/20 13:50	60.0	↑2.8
4/20 14:00	63.3	↑3.3
4/20 14:10	66.8	↑3.5
4/20 14:20	70.6	↑3.8
4/20 14:30	74.8	↑4.2
4/20 14:40	79.1	↑4.3
4/20 14:50	83.7	↑4.6
4/20 15:00	88.5	↑4.8
4/20 15:10	93.4	↑4.9
4/20 15:20	98.4	↑5.0
4/20 15:30	103.5	↑5.1
4/20 15:40	108.6	↑5.1
4/20 15:50	113.8	↑5.2
4/20 16:00	118.9	↑5.1
4/20 16:10	123.9	↑5.0
4/20 16:20	128.8	↑4.9
4/20 16:30	133.6	↑4.8
4/20 16:40	138.2	↑4.6
4/20 16:50	142.5	↑4.3
4/20 17:00	146.6	↑4.1
4/20 17:10	150.5	↑3.9
4/20 17:20	154.0	↑3.5
4/20 17:30	157.2	↑3.2
4/20 17:40	160.0	↑2.8
4/20 17:50	162.4	↑2.4
4/20 18:00	164.4	↑2.0
4/20 18:10	166.1	↑1.7
4/20 18:20	167.2	↑1.1
4/20 18:30	168.0	↑0.8
4/20 18:40	168.3	↑0.3	満潮
4/20 18:50	168.1	↓-0.2
4/20 19:00	167.5	↓-0.6
4/20 19:10	166.4	↓-1.1
4/20 19:20	164.9	↓-1.5
4/20 19:30	162.9	↓-2.0
4/20 19:40	160.5	↓-2.4
4/20 19:50	157.7	↓-2.8
4/20 20:00	154.6	↓-3.1
4/20 20:10	151.0	↓-3.6
4/20 20:20	147.1	↓-3.9
4/20 20:30	142.9	↓-4.2
4/20 20:40	138.5	↓-4.4
4/20 20:50	133.7	↓-4.8
4/20 21:00	128.8	↓-4.9
4/20 21:10	123.6	↓-5.2
4/20 21:20	118.3	↓-5.3
4/20 21:30	112.9	↓-5.4
4/20 21:40	107.4	↓-5.5	最大潮位差
4/20 21:50	101.9	↓-5.5	最大潮位差
4/20 22:00	96.4	↓-5.5	最大潮位差
4/20 22:10	90.9	↓-5.5	最大潮位差
4/20 22:20	85.6	↓-5.3
4/20 22:30	80.3	↓-5.3
4/20 22:40	75.3	↓-5.0
4/20 22:50	70.4	↓-4.9
4/20 23:00	65.7	↓-4.7
4/20 23:10	61.4	↓-4.3
4/20 23:20	57.3	↓-4.1
4/20 23:30	53.6	↓-3.7
4/20 23:40	50.2	↓-3.4
4/20 23:50	47.3	↓-2.9