Cycle | Starting time | Possibly other starting time |
---|---|---|
SC 12 | 1879-04-15 | |
SC 13 | 1890-03-04 | |
SC 14 | 1902-03-06 | |
SC 15 | 1913-10-08 | 1913-02-22 |
SC 16 | 1923-09-04 | |
SC 17 | 1934-02-01 | |
SC 18 | 1943-05-20 | |
SC 19 | 1954-10-05 | 1954-07-16 |
SC 20 | 1963-10-11 | |
SC 21 | 1975-10-02 | 1975-08-21 |
SC 22 | 1986-07-07 | 1984-11-21 |
SC 23 | 1996-05-07 (SOHO/MDI) | 1997-03-29 |
SC 24 | 2008-09-23 (SOHO/MDI) | |
SC 25 | 2016-12-11 (SDO/HMI) | 2019-02-12 (SDO/HMI) |
Time of Active Region appearance on Magnetogram |
Time of Sunspot on Intensitygram |
Remarks |
---|---|---|
2016-12-11 00:00 (new, tiny) | 2016-12-11 07:00 | Third Advent Sunday |
2016-12-18 09:00 (new) | 2016-12-19 16:00 | Fourth Advent Sunday (AR 2620) |
2018-03-14 21:00 (new, low-lat) | 2018-03-15 13:00 | Pi Day |
2018-03-29 00:00 (rolling on limb,low-lat) | 2018-03-29 13:00 | Easter Maundy Thursday (AR 2703) |
2018-04-09 02:00 (new) | 2018-04-09 11:00 | Orthodox Easter Monday |
2018-08-23 11:00 (new, low-lat, unclear) | 2018-08-23 16:00 | Black Ribbon Day |
2018-11-07 15:00 (new) | 2018-11-08 07:00 | Four Crowned Martyrs, Oct. revolution |
2018-11-17 09:00 (new) | 2018-11-17 16:00 | International Students' Day |
2019-02-12 16:00 (new) | 2019-02-12 22:00 | Darwin Day |
2019-03-01 18:00 (rolling on limb) | Roman New Year | |
2019-03-03 12:00 (new, low-lat) | 2019-03-04 13:00 | Estomihi (Quinquadesima) |
2019-05-28 18:00 (new, low-lat) | 2019-05-29 07:00 | Ascension of Baha'u'llah |
2019-06-29 21:00 (new) | 2019-06-30 16:00 | Saints Peter and Paul |
2019-07-06 12:00 (new) | 2019-07-06 16:00 | martyrdom of Jan Hus (AR 2744) |
2019-08-06 06:00 (new, low-lat) | 2019-08-06 19:00 | Transfiguration, Hiroshima |
2019-10-31 06:00 (new) | 2019-11-01 01:00 | All Saints Day (AR 2750) |
2019-11-11 21:00 (rolling on limb) | 2019-11-12 13:00 | Saint Martin (AR 2752) |
2019-11-11 06:00 (new, tiny) | 2019-11-11 10:00 | Saint Martin |
2019-12-09 04:00 (new, tiny) | 2019-12-09 07:00 | Feast of Immaculate Conception |
2019-12-18 06:00 (new) | 2019-12-18 16:00 | Expectation of the Blessed Virgin Mary |
2019-12-23 06:00 (new) | 2019-12-23 16:00 | Christmas Day (almost) (AR 2753) |
2019-12-23 21:00 (new) | 2019-12-24 13:00 | Christmas Eve (AR 2754) |
2019-12-31 23:00 (new) | 2020-01-01 04:00 | New Year Day (AR 2755) |
2020-01-07 12:00 (new) | 2020-01-08 13:00 | Orthodox Christmas Day (AR 2756) |
2020-01-18 06:00 (new) | 2020-01-18 13:00 2020-01-19 19:00 | Confession of St. Peter, Christian Unity. Orthodox Epiphany |
2020-01-24 21:00 (rolling on limb) | 2020-01-25 13:00 | Chinese New Year, Confession of Paul |
2020-02-06 17:00 (new) | 2020-02-07 07:00 | New Martyrs of the Russian Church |