香川県の日の入り・日の出に関する情報をご紹介します。
夕日や朝日が落ちる角度、マジックアワーの時間帯などの情報も幅広く掲載しているので、ぜひ参考にしてみてください！
【5月15日】香川県 日の入り・日の出時刻と方角
- 日の出時刻
- 5時00分
- 日の入り時刻
- 19時00分
5月15日の日の出・日の入りの方角（詳しく見る）
香川県 日の入り・日の出 年間時刻表
| 日付 | 日の出 | 南中方位 | 日の入り |
|---|---|---|---|
| 1/1 | 7:08 | 12:06 | 17:05 |
| 1/2 | 7:08 | 12:07 | 17:06 |
| 1/3 | 7:08 | 12:07 | 17:06 |
| 1/4 | 7:09 | 12:08 | 17:07 |
| 1/5 | 7:09 | 12:08 | 17:08 |
| 1/6 | 7:09 | 12:09 | 17:09 |
| 1/7 | 7:09 | 12:09 | 17:10 |
| 1/8 | 7:09 | 12:10 | 17:11 |
| 1/9 | 7:09 | 12:10 | 17:11 |
| 1/10 | 7:09 | 12:10 | 17:12 |
| 1/11 | 7:09 | 12:11 | 17:13 |
| 1/12 | 7:09 | 12:11 | 17:14 |
| 1/13 | 7:08 | 12:12 | 17:15 |
| 1/14 | 7:08 | 12:12 | 17:16 |
| 1/15 | 7:08 | 12:12 | 17:17 |
| 1/16 | 7:08 | 12:13 | 17:18 |
| 1/17 | 7:08 | 12:13 | 17:19 |
| 1/18 | 7:07 | 12:13 | 17:20 |
| 1/19 | 7:07 | 12:14 | 17:21 |
| 1/20 | 7:07 | 12:14 | 17:22 |
| 1/21 | 7:06 | 12:14 | 17:23 |
| 1/22 | 7:06 | 12:15 | 17:24 |
| 1/23 | 7:05 | 12:15 | 17:25 |
| 1/24 | 7:05 | 12:15 | 17:25 |
| 1/25 | 7:04 | 12:15 | 17:26 |
| 1/26 | 7:04 | 12:16 | 17:27 |
| 1/27 | 7:03 | 12:16 | 17:28 |
| 1/28 | 7:03 | 12:16 | 17:29 |
| 1/29 | 7:02 | 12:16 | 17:30 |
| 1/30 | 7:01 | 12:16 | 17:31 |
| 1/31 | 7:01 | 12:17 | 17:32 |
| 2/1 | 7:00 | 12:17 | 17:33 |
| 2/2 | 6:59 | 12:17 | 17:34 |
| 2/3 | 6:59 | 12:17 | 17:35 |
| 2/4 | 6:58 | 12:17 | 17:36 |
| 2/5 | 6:57 | 12:17 | 17:37 |
| 2/6 | 6:56 | 12:17 | 17:38 |
| 2/7 | 6:55 | 12:17 | 17:39 |
| 2/8 | 6:55 | 12:17 | 17:40 |
| 2/9 | 6:54 | 12:17 | 17:41 |
| 2/10 | 6:53 | 12:18 | 17:42 |
| 2/11 | 6:52 | 12:18 | 17:43 |
| 2/12 | 6:51 | 12:18 | 17:44 |
| 2/13 | 6:50 | 12:18 | 17:45 |
| 2/14 | 6:49 | 12:17 | 17:46 |
| 2/15 | 6:48 | 12:17 | 17:47 |
| 2/16 | 6:47 | 12:17 | 17:48 |
| 2/17 | 6:46 | 12:17 | 17:49 |
| 2/18 | 6:45 | 12:17 | 17:50 |
| 2/19 | 6:44 | 12:17 | 17:51 |
| 2/20 | 6:43 | 12:17 | 17:52 |
| 2/21 | 6:41 | 12:17 | 17:53 |
| 2/22 | 6:40 | 12:17 | 17:54 |
| 2/23 | 6:39 | 12:17 | 17:54 |
| 2/24 | 6:38 | 12:17 | 17:55 |
| 2/25 | 6:37 | 12:16 | 17:56 |
| 2/26 | 6:36 | 12:16 | 17:57 |
| 2/27 | 6:34 | 12:16 | 17:58 |
| 2/28 | 6:33 | 12:16 | 17:59 |
| 2/29 | 6:32 | 12:16 | 18:00 |
| 3/1 | 6:31 | 12:16 | 18:01 |
| 3/2 | 6:29 | 12:15 | 18:01 |
| 3/3 | 6:28 | 12:15 | 18:02 |
| 3/4 | 6:27 | 12:15 | 18:03 |
| 3/5 | 6:26 | 12:15 | 18:04 |
| 3/6 | 6:24 | 12:15 | 18:05 |
| 3/7 | 6:23 | 12:14 | 18:06 |
| 3/8 | 6:22 | 12:14 | 18:06 |
| 3/9 | 6:20 | 12:14 | 18:07 |
| 3/10 | 6:19 | 12:14 | 18:08 |
| 3/11 | 6:18 | 12:13 | 18:09 |
| 3/12 | 6:16 | 12:13 | 18:10 |
| 3/13 | 6:15 | 12:13 | 18:11 |
| 3/14 | 6:14 | 12:12 | 18:11 |
| 3/15 | 6:12 | 12:12 | 18:12 |
| 3/16 | 6:11 | 12:12 | 18:13 |
| 3/17 | 6:10 | 12:12 | 18:14 |
| 3/18 | 6:08 | 12:11 | 18:15 |
| 3/19 | 6:07 | 12:11 | 18:15 |
| 3/20 | 6:05 | 12:11 | 18:16 |
| 3/21 | 6:04 | 12:10 | 18:17 |
| 3/22 | 6:03 | 12:10 | 18:18 |
| 3/23 | 6:01 | 12:10 | 18:18 |
| 3/24 | 6:00 | 12:10 | 18:19 |
| 3/25 | 5:59 | 12:09 | 18:20 |
| 3/26 | 5:57 | 12:09 | 18:21 |
| 3/27 | 5:56 | 12:09 | 18:22 |
| 3/28 | 5:54 | 12:08 | 18:22 |
| 3/29 | 5:53 | 12:08 | 18:23 |
| 3/30 | 5:52 | 12:08 | 18:24 |
| 3/31 | 5:50 | 12:07 | 18:25 |
| 4/1 | 5:49 | 12:07 | 18:25 |
| 4/2 | 5:48 | 12:07 | 18:26 |
| 4/3 | 5:46 | 12:07 | 18:27 |
| 4/4 | 5:45 | 12:06 | 18:28 |
| 4/5 | 5:43 | 12:06 | 18:28 |
| 4/6 | 5:42 | 12:06 | 18:29 |
| 4/7 | 5:41 | 12:05 | 18:30 |
| 4/8 | 5:40 | 12:05 | 18:31 |
| 4/9 | 5:38 | 12:05 | 18:32 |
| 4/10 | 5:37 | 12:05 | 18:32 |
| 4/11 | 5:36 | 12:04 | 18:33 |
| 4/12 | 5:34 | 12:04 | 18:34 |
| 4/13 | 5:33 | 12:04 | 18:35 |
| 4/14 | 5:32 | 12:04 | 18:35 |
| 4/15 | 5:30 | 12:03 | 18:36 |
| 4/16 | 5:29 | 12:03 | 18:37 |
| 4/17 | 5:28 | 12:03 | 18:38 |
| 4/18 | 5:27 | 12:03 | 18:39 |
| 4/19 | 5:26 | 12:02 | 18:39 |
| 4/20 | 5:24 | 12:02 | 18:40 |
| 4/21 | 5:23 | 12:02 | 18:41 |
| 4/22 | 5:22 | 12:02 | 18:42 |
| 4/23 | 5:21 | 12:02 | 18:42 |
| 4/24 | 5:20 | 12:01 | 18:43 |
| 4/25 | 5:18 | 12:01 | 18:44 |
| 4/26 | 5:17 | 12:01 | 18:45 |
| 4/27 | 5:16 | 12:01 | 18:46 |
| 4/28 | 5:15 | 12:01 | 18:46 |
| 4/29 | 5:14 | 12:01 | 18:47 |
| 4/30 | 5:13 | 12:01 | 18:48 |
| 5/1 | 5:12 | 12:00 | 18:49 |
| 5/2 | 5:11 | 12:00 | 18:50 |
| 5/3 | 5:10 | 12:00 | 18:50 |
| 5/4 | 5:09 | 12:00 | 18:51 |
| 5/5 | 5:08 | 12:00 | 18:52 |
| 5/6 | 5:07 | 12:00 | 18:53 |
| 5/7 | 5:06 | 12:00 | 18:54 |
| 5/8 | 5:05 | 12:00 | 18:54 |
| 5/9 | 5:04 | 12:00 | 18:55 |
| 5/10 | 5:04 | 12:00 | 18:56 |
| 5/11 | 5:03 | 12:00 | 18:57 |
| 5/12 | 5:02 | 12:00 | 18:57 |
| 5/13 | 5:01 | 12:00 | 18:58 |
| 5/14 | 5:00 | 12:00 | 18:59 |
| 5/15 | 5:00 | 12:00 | 19:00 |
| 5/16 | 4:59 | 12:00 | 19:01 |
| 5/17 | 4:58 | 12:00 | 19:01 |
| 5/18 | 4:57 | 12:00 | 19:02 |
| 5/19 | 4:57 | 12:00 | 19:03 |
| 5/20 | 4:56 | 12:00 | 19:04 |
| 5/21 | 4:56 | 12:00 | 19:04 |
| 5/22 | 4:55 | 12:00 | 19:05 |
| 5/23 | 4:55 | 12:00 | 19:06 |
| 5/24 | 4:54 | 12:00 | 19:06 |
| 5/25 | 4:53 | 12:00 | 19:07 |
| 5/26 | 4:53 | 12:00 | 19:08 |
| 5/27 | 4:53 | 12:01 | 19:08 |
| 5/28 | 4:52 | 12:01 | 19:09 |
| 5/29 | 4:52 | 12:01 | 19:10 |
| 5/30 | 4:51 | 12:01 | 19:10 |
| 5/31 | 4:51 | 12:01 | 19:11 |
| 6/1 | 4:51 | 12:01 | 19:12 |
| 6/2 | 4:50 | 12:01 | 19:12 |
| 6/3 | 4:50 | 12:02 | 19:13 |
| 6/4 | 4:50 | 12:02 | 19:13 |
| 6/5 | 4:50 | 12:02 | 19:14 |
| 6/6 | 4:50 | 12:02 | 19:14 |
| 6/7 | 4:49 | 12:02 | 19:15 |
| 6/8 | 4:49 | 12:02 | 19:16 |
| 6/9 | 4:49 | 12:03 | 19:16 |
| 6/10 | 4:49 | 12:03 | 19:16 |
| 6/11 | 4:49 | 12:03 | 19:17 |
| 6/12 | 4:49 | 12:03 | 19:17 |
| 6/13 | 4:49 | 12:03 | 19:18 |
| 6/14 | 4:49 | 12:04 | 19:18 |
| 6/15 | 4:49 | 12:04 | 19:18 |
| 6/16 | 4:49 | 12:04 | 19:19 |
| 6/17 | 4:49 | 12:04 | 19:19 |
| 6/18 | 4:50 | 12:05 | 19:19 |
| 6/19 | 4:50 | 12:05 | 19:20 |
| 6/20 | 4:50 | 12:05 | 19:20 |
| 6/21 | 4:50 | 12:05 | 19:20 |
| 6/22 | 4:50 | 12:05 | 19:20 |
| 6/23 | 4:51 | 12:06 | 19:21 |
| 6/24 | 4:51 | 12:06 | 19:21 |
| 6/25 | 4:51 | 12:06 | 19:21 |
| 6/26 | 4:52 | 12:06 | 19:21 |
| 6/27 | 4:52 | 12:06 | 19:21 |
| 6/28 | 4:52 | 12:07 | 19:21 |
| 6/29 | 4:53 | 12:07 | 19:21 |
| 6/30 | 4:53 | 12:07 | 19:21 |
| 7/1 | 4:54 | 12:07 | 19:21 |
| 7/2 | 4:54 | 12:07 | 19:21 |
| 7/3 | 4:54 | 12:08 | 19:21 |
| 7/4 | 4:55 | 12:08 | 19:21 |
| 7/5 | 4:55 | 12:08 | 19:21 |
| 7/6 | 4:56 | 12:08 | 19:20 |
| 7/7 | 4:56 | 12:08 | 19:20 |
| 7/8 | 4:57 | 12:08 | 19:20 |
| 7/9 | 4:58 | 12:09 | 19:20 |
| 7/10 | 4:58 | 12:09 | 19:19 |
| 7/11 | 4:59 | 12:09 | 19:19 |
| 7/12 | 4:59 | 12:09 | 19:19 |
| 7/13 | 5:00 | 12:09 | 19:18 |
| 7/14 | 5:00 | 12:09 | 19:18 |
| 7/15 | 5:01 | 12:09 | 19:18 |
| 7/16 | 5:02 | 12:09 | 19:17 |
| 7/17 | 5:02 | 12:10 | 19:17 |
| 7/18 | 5:03 | 12:10 | 19:16 |
| 7/19 | 5:04 | 12:10 | 19:16 |
| 7/20 | 5:04 | 12:10 | 19:15 |
| 7/21 | 5:05 | 12:10 | 19:14 |
| 7/22 | 5:06 | 12:10 | 19:14 |
| 7/23 | 5:06 | 12:10 | 19:13 |
| 7/24 | 5:07 | 12:10 | 19:13 |
| 7/25 | 5:08 | 12:10 | 19:12 |
| 7/26 | 5:09 | 12:10 | 19:11 |
| 7/27 | 5:09 | 12:10 | 19:10 |
| 7/28 | 5:10 | 12:10 | 19:10 |
| 7/29 | 5:11 | 12:10 | 19:09 |
| 7/30 | 5:11 | 12:10 | 19:08 |
| 7/31 | 5:12 | 12:10 | 19:07 |
| 8/1 | 5:13 | 12:10 | 19:06 |
| 8/2 | 5:14 | 12:10 | 19:06 |
| 8/3 | 5:14 | 12:10 | 19:05 |
| 8/4 | 5:15 | 12:09 | 19:04 |
| 8/5 | 5:16 | 12:09 | 19:03 |
| 8/6 | 5:17 | 12:09 | 19:02 |
| 8/7 | 5:17 | 12:09 | 19:01 |
| 8/8 | 5:18 | 12:09 | 19:00 |
| 8/9 | 5:19 | 12:09 | 18:59 |
| 8/10 | 5:20 | 12:09 | 18:58 |
| 8/11 | 5:20 | 12:09 | 18:57 |
| 8/12 | 5:21 | 12:08 | 18:56 |
| 8/13 | 5:22 | 12:08 | 18:55 |
| 8/14 | 5:23 | 12:08 | 18:53 |
| 8/15 | 5:23 | 12:08 | 18:52 |
| 8/16 | 5:24 | 12:08 | 18:51 |
| 8/17 | 5:25 | 12:07 | 18:50 |
| 8/18 | 5:25 | 12:07 | 18:49 |
| 8/19 | 5:26 | 12:07 | 18:48 |
| 8/20 | 5:27 | 12:07 | 18:46 |
| 8/21 | 5:28 | 12:06 | 18:45 |
| 8/22 | 5:28 | 12:06 | 18:44 |
| 8/23 | 5:29 | 12:06 | 18:43 |
| 8/24 | 5:30 | 12:06 | 18:42 |
| 8/25 | 5:31 | 12:05 | 18:40 |
| 8/26 | 5:31 | 12:05 | 18:39 |
| 8/27 | 5:32 | 12:05 | 18:38 |
| 8/28 | 5:33 | 12:05 | 18:36 |
| 8/29 | 5:33 | 12:04 | 18:35 |
| 8/30 | 5:34 | 12:04 | 18:34 |
| 8/31 | 5:35 | 12:04 | 18:32 |
| 9/1 | 5:36 | 12:03 | 18:31 |
| 9/2 | 5:36 | 12:03 | 18:30 |
| 9/3 | 5:37 | 12:03 | 18:28 |
| 9/4 | 5:38 | 12:02 | 18:27 |
| 9/5 | 5:38 | 12:02 | 18:26 |
| 9/6 | 5:39 | 12:02 | 18:24 |
| 9/7 | 5:40 | 12:01 | 18:23 |
| 9/8 | 5:40 | 12:01 | 18:21 |
| 9/9 | 5:41 | 12:01 | 18:20 |
| 9/10 | 5:42 | 12:00 | 18:19 |
| 9/11 | 5:43 | 12:00 | 18:17 |
| 9/12 | 5:43 | 12:00 | 18:16 |
| 9/13 | 5:44 | 11:59 | 18:14 |
| 9/14 | 5:45 | 11:59 | 18:13 |
| 9/15 | 5:45 | 11:58 | 18:12 |
| 9/16 | 5:46 | 11:58 | 18:10 |
| 9/17 | 5:47 | 11:58 | 18:09 |
| 9/18 | 5:47 | 11:57 | 18:07 |
| 9/19 | 5:48 | 11:57 | 18:06 |
| 9/20 | 5:49 | 11:57 | 18:05 |
| 9/21 | 5:50 | 11:56 | 18:03 |
| 9/22 | 5:50 | 11:56 | 18:02 |
| 9/23 | 5:51 | 11:56 | 18:00 |
| 9/24 | 5:52 | 11:55 | 17:59 |
| 9/25 | 5:52 | 11:55 | 17:58 |
| 9/26 | 5:53 | 11:55 | 17:56 |
| 9/27 | 5:54 | 11:54 | 17:55 |
| 9/28 | 5:55 | 11:54 | 17:53 |
| 9/29 | 5:55 | 11:54 | 17:52 |
| 9/30 | 5:56 | 11:53 | 17:51 |
| 10/1 | 5:57 | 11:53 | 17:49 |
| 10/2 | 5:58 | 11:53 | 17:48 |
| 10/3 | 5:58 | 11:52 | 17:46 |
| 10/4 | 5:59 | 11:52 | 17:45 |
| 10/5 | 6:00 | 11:52 | 17:44 |
| 10/6 | 6:01 | 11:51 | 17:42 |
| 10/7 | 6:01 | 11:51 | 17:41 |
| 10/8 | 6:02 | 11:51 | 17:40 |
| 10/9 | 6:03 | 11:51 | 17:38 |
| 10/10 | 6:04 | 11:50 | 17:37 |
| 10/11 | 6:04 | 11:50 | 17:36 |
| 10/12 | 6:05 | 11:50 | 17:34 |
| 10/13 | 6:06 | 11:50 | 17:33 |
| 10/14 | 6:07 | 11:49 | 17:32 |
| 10/15 | 6:08 | 11:49 | 17:31 |
| 10/16 | 6:08 | 11:49 | 17:29 |
| 10/17 | 6:09 | 11:49 | 17:28 |
| 10/18 | 6:10 | 11:48 | 17:27 |
| 10/19 | 6:11 | 11:48 | 17:26 |
| 10/20 | 6:12 | 11:48 | 17:25 |
| 10/21 | 6:13 | 11:48 | 17:23 |
| 10/22 | 6:13 | 11:48 | 17:22 |
| 10/23 | 6:14 | 11:48 | 17:21 |
| 10/24 | 6:15 | 11:48 | 17:20 |
| 10/25 | 6:16 | 11:47 | 17:19 |
| 10/26 | 6:17 | 11:47 | 17:18 |
| 10/27 | 6:18 | 11:47 | 17:17 |
| 10/28 | 6:19 | 11:47 | 17:16 |
| 10/29 | 6:19 | 11:47 | 17:15 |
| 10/30 | 6:20 | 11:47 | 17:14 |
| 10/31 | 6:21 | 11:47 | 17:13 |
| 11/1 | 6:22 | 11:47 | 17:12 |
| 11/2 | 6:23 | 11:47 | 17:11 |
| 11/3 | 6:24 | 11:47 | 17:10 |
| 11/4 | 6:25 | 11:47 | 17:09 |
| 11/5 | 6:26 | 11:47 | 17:08 |
| 11/6 | 6:27 | 11:47 | 17:07 |
| 11/7 | 6:28 | 11:47 | 17:06 |
| 11/8 | 6:29 | 11:47 | 17:05 |
| 11/9 | 6:30 | 11:47 | 17:05 |
| 11/10 | 6:31 | 11:47 | 17:04 |
| 11/11 | 6:31 | 11:47 | 17:03 |
| 11/12 | 6:32 | 11:47 | 17:03 |
| 11/13 | 6:33 | 11:48 | 17:02 |
| 11/14 | 6:34 | 11:48 | 17:01 |
| 11/15 | 6:35 | 11:48 | 17:01 |
| 11/16 | 6:36 | 11:48 | 17:00 |
| 11/17 | 6:37 | 11:48 | 16:59 |
| 11/18 | 6:38 | 11:49 | 16:59 |
| 11/19 | 6:39 | 11:49 | 16:58 |
| 11/20 | 6:40 | 11:49 | 16:58 |
| 11/21 | 6:41 | 11:49 | 16:57 |
| 11/22 | 6:42 | 11:49 | 16:57 |
| 11/23 | 6:43 | 11:50 | 16:57 |
| 11/24 | 6:44 | 11:50 | 16:56 |
| 11/25 | 6:45 | 11:50 | 16:56 |
| 11/26 | 6:46 | 11:51 | 16:56 |
| 11/27 | 6:46 | 11:51 | 16:55 |
| 11/28 | 6:47 | 11:51 | 16:55 |
| 11/29 | 6:48 | 11:52 | 16:55 |
| 11/30 | 6:49 | 11:52 | 16:55 |
| 12/1 | 6:50 | 11:52 | 16:55 |
| 12/2 | 6:51 | 11:53 | 16:55 |
| 12/3 | 6:52 | 11:53 | 16:55 |
| 12/4 | 6:53 | 11:54 | 16:55 |
| 12/5 | 6:53 | 11:54 | 16:55 |
| 12/6 | 6:54 | 11:54 | 16:55 |
| 12/7 | 6:55 | 11:55 | 16:55 |
| 12/8 | 6:56 | 11:55 | 16:55 |
| 12/9 | 6:57 | 11:56 | 16:55 |
| 12/10 | 6:57 | 11:56 | 16:55 |
| 12/11 | 6:58 | 11:57 | 16:55 |
| 12/12 | 6:59 | 11:57 | 16:55 |
| 12/13 | 6:59 | 11:58 | 16:56 |
| 12/14 | 7:00 | 11:58 | 16:56 |
| 12/15 | 7:01 | 11:59 | 16:56 |
| 12/16 | 7:01 | 11:59 | 16:57 |
| 12/17 | 7:02 | 11:59 | 16:57 |
| 12/18 | 7:03 | 12:00 | 16:57 |
| 12/19 | 7:03 | 12:00 | 16:58 |
| 12/20 | 7:04 | 12:01 | 16:58 |
| 12/21 | 7:04 | 12:01 | 16:59 |
| 12/22 | 7:05 | 12:02 | 16:59 |
| 12/23 | 7:05 | 12:02 | 17:00 |
| 12/24 | 7:06 | 12:03 | 17:00 |
| 12/25 | 7:06 | 12:03 | 17:01 |
| 12/26 | 7:06 | 12:04 | 17:01 |
| 12/27 | 7:07 | 12:04 | 17:02 |
| 12/28 | 7:07 | 12:05 | 17:03 |
| 12/29 | 7:07 | 12:05 | 17:03 |
| 12/30 | 7:08 | 12:06 | 17:04 |
| 12/31 | 7:08 | 12:06 | 17:05 |
香川県の日の出・日の入りに関するFAQ
- 2024-05-15の香川県の日の出時刻は何時？
- 2024-05-15の香川県の日の出時刻は7:08です。
- 2024-05-15の香川県のゴールデンアワーは何時ですか？
- 4:10 〜 4:40にかけてゴールデンアワーの空を眺めることができます。
- 2024-05-15の香川県の日の入り（日没）時刻は何時？
- 2024-05-15の香川県の日の入り（日没）時刻は17:05です。
- 2024-05-15の香川県のマジックアワーは何時ですか？
- 19:20 〜 19:50にかけてマジックアワーの空を眺めることができます。
日の出・日の入りに関する基本知識
- 夏至（6月21日）
- 1年でもっとも日が出ている時間が長い日。北東から朝日が昇り、北西に夕日が沈んでいく。
- 冬至（12月22日）
- 1年でもっとも日が出ている時間が短い日。南東から朝日が昇り、南西に夕日が沈んでいく。
- 春分（3月20日）/ 秋分（9月22日）
- 昼と夜の時間がほぼ同じになる日。真東から朝日が上り、真西に夕日が沈んでいく。
- 日の出・日の入り時刻の地域差
- 同じ日でも東に行くほど日の出・日の入りが早くなります。（経度で1度東に進むごとに、4分ずつ日の出・日の入りが早くなる）
