以下、2021年4月～2022年3月の期間に起こる主極小予報を記しています。時刻は日本時間（JST）となります。高度（°）は主極小時に東京を観測地とした場合の値です。予報式は以下の通りです(計算者: 永井和男氏)。
min = 2452500.172 + 2.867338 x E
(cracow 20 Feb. 2021)
| 年 (year) | 月 (month) | 日 (day) | 時刻 (time; JST) | 高度 (altitude; °) |
|---|---|---|---|---|
| 2021 | 4 | 8 | 20:19 | 17.4 |
| 2021 | 4 | 23 | 04:25 | 0.8 |
| 2021 | 5 | 1 | 18:52 | 17.0 |
| 2021 | 5 | 16 | 02:57 | 1.1 |
| 2021 | 6 | 5 | 04:39 | 28.7 |
| 2021 | 6 | 8 | 01:28 | 1.4 |
| 2021 | 6 | 28 | 03:10 | 29.1 |
| 2021 | 6 | 30 | 23:58 | 1.6 |
| 2021 | 7 | 18 | 04:50 | 62.4 |
| 2021 | 7 | 21 | 01:39 | 29.4 |
| 2021 | 7 | 23 | 22:28 | 1.9 |
| 2021 | 8 | 10 | 03:19 | 62.8 |
| 2021 | 8 | 13 | 00:08 | 29.8 |
| 2021 | 8 | 15 | 20:57 | 2.2 |
| 2021 | 8 | 30 | 05:00 | 79.8 |
| 2021 | 9 | 2 | 01:48 | 63.2 |
| 2021 | 9 | 4 | 22:37 | 30.2 |
| 2021 | 9 | 7 | 19:25 | 2.4 |
| 2021 | 9 | 22 | 03:29 | 79.4 |
| 2021 | 9 | 25 | 00:17 | 63.6 |
| 2021 | 9 | 27 | 21:06 | 30.6 |
| 2021 | 10 | 12 | 05:09 | 45.6 |
| 2021 | 10 | 15 | 01:58 | 79.0 |
| 2021 | 10 | 17 | 22:47 | 64.0 |
| 2021 | 10 | 20 | 19:36 | 30.9 |
| 2021 | 11 | 4 | 03:40 | 45.2 |
| 2021 | 11 | 7 | 00:29 | 78.6 |
| 2021 | 11 | 9 | 21:17 | 64.4 |
| 2021 | 11 | 12 | 18:06 | 31.3 |
| 2021 | 11 | 24 | 05:22 | 14.0 |
| 2021 | 11 | 27 | 02:11 | 44.8 |
| 2021 | 11 | 29 | 23:00 | 78.3 |
| 2021 | 12 | 2 | 19:49 | 64.8 |
| 2021 | 12 | 17 | 03:55 | 13.6 |
| 2021 | 12 | 20 | 00:44 | 44.4 |
| 2021 | 12 | 22 | 21:33 | 77.9 |
| 2021 | 12 | 25 | 18:22 | 65.2 |
| 2022 | 1 | 9 | 02:29 | 13.3 |
| 2022 | 1 | 11 | 23:18 | 44.0 |
| 2022 | 1 | 14 | 20:07 | 77.5 |
| 2022 | 2 | 1 | 01:03 | 13.0 |
| 2022 | 2 | 3 | 21:53 | 43.6 |
| 2022 | 2 | 6 | 18:42 | 77.1 |
| 2022 | 2 | 23 | 23:38 | 12.7 |
| 2022 | 2 | 26 | 20:27 | 43.2 |
| 2022 | 3 | 18 | 22:13 | 12.3 |
| 2022 | 3 | 21 | 19:02 | 42.8 |