# DOI: https://doi.org/10.5880/Kp.0001 # LICENCE: CC BY 4.0, please cite: # Matzka, J., Bronkalla, O., Tornow, K., Elger, K. and Stolle, C., 2021. # Geomagnetic Kp index. V. 1.0. GFZ Data Services, # https://doi.org/10.5880/Kp.0001 # Matzka, J., Stolle, C., Yamazaki, Y., Bronkalla, O. and Morschhauser, A., # 2021. The geomagnetic Kp index and derived indices of geomagnetic activity. # Space Weather, https://doi.org/10.1029/2020SW002641 # The Kp index was introduced by Bartels (1949) and is produced by Geomagnetic # Observatory Niemegk, GFZ German Research Centre for Geosciences. International Quietest Days Most Disturbed Days Month Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 D1 D2 D3 D4 D5 Jan 2020 20 19 14 24 13 27 2 17 1 12 30* 9* 5* 29* 6* Feb 2020 13 25 14 27 16 26 3 24 10 5 6* 7* 21* 18* 19* Mar 2020 14 11 25 5 10 7 24 6 15 2 31* 23* 30* 19* 21* Apr 2020 19 30 29 6 23 17 7 18 16 5 20* 8* 21* 3* 14* May 2020 14 9 17 20 28 15 29 16 8 7 30* 22* 5* 6* 25* Jun 2020 29 22 14 6 25 12 13 3 28 15 7* 2* 10* 27* 26* Jul 2020 8 12 11 10 23 26 22 9 20 27 25* 24* 14* 5* 4* Aug 2020 9 10 15 11 24 20 17 1 25 16 31 3* 29* 2* 28* Sep 2020 9 10 21 11 19 16 17 8 3 7 28 26 24 27 1* Oct 2020 14 9 10 15 8 18 13 11 12 16 24* 26* 25* 23* 29* Nov 2020 9 10 16 4 2 17 19 3 18 13 22 21* 28* 1* 23* Dec 2020 4 17 18 7 1 16 15 3 31 2 22* 21* 23* 24* 30* Jan 2021 2 3 14 8 31 30 4 21 17 9 25* 11* 26* 6* 27* Feb 2021 11 10 27 9 14 18 15 1 5 28 20 21 24* 7* 22* Mar 2021 10 16 9 29 30 11 18 17 5 8K 20 14 1 21 3* Apr 2021 6 28 4 3 9 8 29 10 5 12 17 16* 19* 25* 18* May 2021 5 28 31 24 7 25 11 9 8 6 12 20 27* 26* 18* Jun 2021 1 28 27 9 19 26 21 14 23 4 15* 16* 30* 7* 12* Jul 2021 25 4 23 24 26 11 17 8 16 3 14* 28* 20* 15* 22* Aug 2021 5 23 22 14 1 21 9 12 19 8 27 28* 2* 7* 3* Sep 2021 26 19 20 16 2 9 1 29 4 15 17 8* 22* 23* 28* Oct 2021 28 27 29 7 23 22 24 8 9 25 12 11* 31* 1* 19* Nov 2021 13 26 14 12 11 24 27K 19 25 18 4 2* 6* 3* 16* Dec 2021 9 10 17 26 12 18 8 31 23 7 1* 20* 19* 27* 22* Jan 2022 7 6 13 12 24 5 11 20K 4K 10 19 15 18* 16* 29* Feb 2022 26 9 15 8 17 18 1K 24K 7 23 4 3 10 11* 22* Mar 2022 18 2 21 3 19 9 17 8 16 23 13 31 5 11 6* Apr 2022 26 25 24 5 6 22 19K 16A 8A 3A 14 10 15 2 9* May 2022 7 10 5 24 26 6 23 11 2 8 28 27* 29* 20* 17* Jun 2022 4 30 3 5 2 10 9 8 29 1 26 15* 25* 13* 17* Jul 2022 5 17 29 14 6 13 25 9 20 10 19 7* 8* 4* 21 Aug 2022 24 6 25 23 26 16 15 14 4 5K 18 8 17 7 9* Sep 2022 13 28 16 17 21 26K 25 22K 29 15K 4 5 3 27 6* Oct 2022 1 13 19 25 21 17K 26 12 18 11K 29 3 9 22 4* Nov 2022 10 17 15 22 6 23 16 14 19 12 3 30 28 29 25* Dec 2022 17 13 6 18 14 16 28 20 15 12 30 1 27 24 23 Jan 2023 6 24 30 9 29 20 17K 3 7 19K 15 4* 21* 18* 1* Feb 2023 13 5 24 2K 4K 1 19 17K 18 14 27 15 28 26 16 Mar 2023 27 13 28 29 17 16K 11K 21 26A 8A 24 23 15 5 3 Apr 2023 12 16 17 20 11 8 13 9K 14 22 24 23 27 29 28* May 2023 18 17 5 29 3 27 30 26 15 4 20 6 10 21 22 Jun 2023 3 9 10 7 5 14 8 2 13 6 16 15 24* 29* 25* Jul 2023 4 9 3 19 10 2 1 28 31 5 17 14 26* 7* 18* Aug 2023 6 15 23 11 14 25 13 29 30 3 5 4* 2* 18* 7* Sep 2023 10 7 11 28K 8 16K 4 6K 15K 9A 19 2 18 26 25 Oct 2023 17 23 12 11 24 15 16 25 10 7 29 26 21 28* 5* Nov 2023 18 3 19 17 11 29 20 30 2 14K 5 6 25 22 7* Dec 2023 9 11 22 28 31 25 10 27 30 8 1 17 18 14* 5* Jan 2024 7 13 6 17 8 12 27 5 21 26 3* 1* 2* 24* 29* Feb 2024 19 3 2 23 15 21 7 29 16 17 11* 27* 25* 26* 13* Mar 2024 17 16 30 11 20 18 2 29 12 6K 24 23 3 25 21 Apr 2024 25 24 18 14 12 11 13 3 29 28K 19 16 26* 21* 30* May 2024 22 28 9 4K 25 8 29 20 7 14 11 10 12 2 13 Jun 2024 13 22 21 24 12 2 9 1 6 14 28 7 15* 8* 16* Jul 2024 6 13 19 18 2 3 21 14 10 23 26 30 31* 27* 8* Aug 2024 26 15 29 6 25 9 8 23 7 10 12 4 11 31 17 Sep 2024 5 22 21 20K 3 27 10 6K 28K 7 17 12 13 25 16* Oct 2024 25 13 21 1 2 5 20K 14K 3A 17A 11 10 7 8 19