20 (火)	04:10	10:26	17:03	22:45
	184cm	11cm	190cm	59cm
大潮 出 05:00 入 18:15 出 17:43 入 04:07 潮干狩り ◎ 08:36～12:16

千葉灯標（千葉）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	80.5	↑4.8
4/20 00:10	85.6	↑5.1
4/20 00:20	90.8	↑5.2
4/20 00:30	96.3	↑5.5
4/20 00:40	101.9	↑5.6
4/20 00:50	107.5	↑5.6
4/20 01:00	113.2	↑5.7
4/20 01:10	118.9	↑5.7
4/20 01:20	124.6	↑5.7
4/20 01:30	130.1	↑5.5
4/20 01:40	135.6	↑5.5
4/20 01:50	141.0	↑5.4
4/20 02:00	146.1	↑5.1
4/20 02:10	151.1	↑5.0
4/20 02:20	155.8	↑4.7
4/20 02:30	160.2	↑4.4
4/20 02:40	164.3	↑4.1
4/20 02:50	168.1	↑3.8
4/20 03:00	171.6	↑3.5
4/20 03:10	174.6	↑3.0
4/20 03:20	177.2	↑2.6
4/20 03:30	179.3	↑2.1
4/20 03:40	181.0	↑1.7
4/20 03:50	182.3	↑1.3
4/20 04:00	183.0	↑0.7	満潮
4/20 04:10	183.2	↑0.2	満潮
4/20 04:20	182.8	↓-0.4
4/20 04:30	182.0	↓-0.8
4/20 04:40	180.6	↓-1.4
4/20 04:50	178.6	↓-2.0
4/20 05:00	176.2	↓-2.4
4/20 05:10	173.2	↓-3.0
4/20 05:20	169.8	↓-3.4
4/20 05:30	165.8	↓-4.0
4/20 05:40	161.4	↓-4.4
4/20 05:50	156.5	↓-4.9
4/20 06:00	151.2	↓-5.3
4/20 06:10	145.5	↓-5.7
4/20 06:20	139.5	↓-6.0
4/20 06:30	133.2	↓-6.3
4/20 06:40	126.6	↓-6.6
4/20 06:50	119.8	↓-6.8
4/20 07:00	112.8	↓-7.0
4/20 07:10	105.7	↓-7.1
4/20 07:20	98.5	↓-7.2
4/20 07:30	91.2	↓-7.3	最大潮位差
4/20 07:40	84.0	↓-7.2
4/20 07:50	76.8	↓-7.2
4/20 08:00	69.8	↓-7.0
4/20 08:10	62.9	↓-6.9
4/20 08:20	56.3	↓-6.6
4/20 08:30	49.9	↓-6.4
4/20 08:40	43.9	↓-6.0
4/20 08:50	38.3	↓-5.6
4/20 09:00	33.1	↓-5.2
4/20 09:10	28.3	↓-4.8
4/20 09:20	24.1	↓-4.2
4/20 09:30	20.4	↓-3.7
4/20 09:40	17.3	↓-3.1
4/20 09:50	14.7	↓-2.6
4/20 10:00	12.8	↓-1.9
4/20 10:10	11.6	↓-1.2
4/20 10:20	11.0	↓-0.6	干潮
4/20 10:30	11.0	0
4/20 10:40	11.7	↑0.7
4/20 10:50	13.0	↑1.3
4/20 11:00	14.9	↑1.9
4/20 11:10	17.4	↑2.5
4/20 11:20	20.5	↑3.1
4/20 11:30	24.1	↑3.6
4/20 11:40	28.2	↑4.1
4/20 11:50	32.8	↑4.6
4/20 12:00	37.8	↑5.0
4/20 12:10	43.2	↑5.4
4/20 12:20	49.0	↑5.8
4/20 12:30	55.0	↑6.0
4/20 12:40	61.4	↑6.4
4/20 12:50	67.9	↑6.5
4/20 13:00	74.6	↑6.7
4/20 13:10	81.4	↑6.8
4/20 13:20	88.3	↑6.9
4/20 13:30	95.2	↑6.9
4/20 13:40	102.1	↑6.9
4/20 13:50	109.0	↑6.9
4/20 14:00	115.9	↑6.9
4/20 14:10	122.6	↑6.7
4/20 14:20	129.2	↑6.6
4/20 14:30	135.6	↑6.4
4/20 14:40	141.8	↑6.2
4/20 14:50	147.7	↑5.9
4/20 15:00	153.4	↑5.7
4/20 15:10	158.7	↑5.3
4/20 15:20	163.7	↑5.0
4/20 15:30	168.4	↑4.7
4/20 15:40	172.6	↑4.2
4/20 15:50	176.5	↑3.9
4/20 16:00	179.8	↑3.3
4/20 16:10	182.8	↑3.0
4/20 16:20	185.2	↑2.4
4/20 16:30	187.1	↑1.9
4/20 16:40	188.5	↑1.4
4/20 16:50	189.4	↑0.9
4/20 17:00	189.8	↑0.4	満潮
4/20 17:10	189.6	↓-0.2
4/20 17:20	188.9	↓-0.7
4/20 17:30	187.7	↓-1.2
4/20 17:40	185.9	↓-1.8
4/20 17:50	183.7	↓-2.2
4/20 18:00	181.0	↓-2.7
4/20 18:10	177.8	↓-3.2
4/20 18:20	174.2	↓-3.6
4/20 18:30	170.1	↓-4.1
4/20 18:40	165.7	↓-4.4
4/20 18:50	160.9	↓-4.8
4/20 19:00	155.9	↓-5.0
4/20 19:10	150.5	↓-5.4
4/20 19:20	145.0	↓-5.5
4/20 19:30	139.2	↓-5.8
4/20 19:40	133.3	↓-5.9
4/20 19:50	127.4	↓-5.9
4/20 20:00	121.3	↓-6.1
4/20 20:10	115.3	↓-6.0
4/20 20:20	109.4	↓-5.9
4/20 20:30	103.5	↓-5.9
4/20 20:40	97.9	↓-5.6
4/20 20:50	92.4	↓-5.5
4/20 21:00	87.2	↓-5.2
4/20 21:10	82.3	↓-4.9
4/20 21:20	77.7	↓-4.6
4/20 21:30	73.5	↓-4.2
4/20 21:40	69.8	↓-3.7
4/20 21:50	66.6	↓-3.2
4/20 22:00	63.8	↓-2.8
4/20 22:10	61.6	↓-2.2
4/20 22:20	59.9	↓-1.7
4/20 22:30	58.8	↓-1.1
4/20 22:40	58.3	↓-0.5	干潮
4/20 22:50	58.3	0
4/20 23:00	58.9	↑0.6
4/20 23:10	60.1	↑1.2
4/20 23:20	61.8	↑1.7
4/20 23:30	64.0	↑2.2
4/20 23:40	66.8	↑2.8
4/20 23:50	70.0	↑3.2