2023-06-24 His Majesty King of Spain Contest, SSB His Majesty King of Spain Contest, SSB June 24, 2023 @ 8:00 am - June 25, 2023 @ 8:00 am His Majesty King of Spain Contest, SSB Start: 1200Z, Jun 24 Finish: 1200Z, Jun 25 Info: http://concursos.ure.es/en/s-m-el-rey-de-espana-ssb/bases/
2023-06-24 Ukrainian DX DIGI Contest Ukrainian DX DIGI Contest June 24, 2023 @ 8:00 am - June 25, 2023 @ 8:00 am Ukrainian DX DIGI Contest Start: 1200Z, Jun 24 Finish: 1200Z, Jun 25 h Info: http://izmail-dx.irc.net.ua/
2023-06-24 ARRL Field Day ARRL Field Day June 24, 2023 @ 2:00 pm - June 25, 2023 @ 5:00 pm ARRL Field Day Start: 1800Z, Jun 24 Finish: 2100Z, Jun 25 h Info: http://www.arrl.org/feld-day
2023-07-01 DL-DX RTTY Contest DL-DX RTTY Contest July 1, 2023 @ 7:00 am - July 2, 2023 @ 6:59 am DL-DX RTTY Contest Start: 1100Z, Jul 1 Finish: 1059Z, Jul 2 Info: http://www.drcg.de/dldxrtty/dl-dx-rtty-english.html
2023-07-01 Marconi Memorial HF Contest Marconi Memorial HF Contest July 1, 2023 @ 10:00 am - July 2, 2023 @ 10:00 am Marconi Memorial HF Contest Start: 1400Z, Jul 1 Finish: 1400Z, Jul 2 Info: http://www.arifano.it/contest_marconi.html
8:00 pm - 8:59 pm RAC Canada Day Contest July 1, 2023 @ 8:00 pm - 8:59 pm RAC Canada Day Contest Start: 0000Z, Jul 1 Finish: 2359Z, Jul 1 Info: https://www.rac.ca/wp-content/uploads/2022/05/CanadaDayContest2022_
2023-07-08 IARU HF World Championship IARU HF World Championship July 8, 2023 @ 8:00 am - July 9, 2023 @ 8:00 am IARU HF World Championship Start: 1200Z, Jul 8 Finish: 1200Z, Jul 9 Info: http://www.arrl.org/iaru-hf-world-championship
2023-07-15 CQ Worldwide VHF Contest CQ Worldwide VHF Contest July 15, 2023 @ 2:00 pm - July 16, 2023 @ 5:00 pm CQ Worldwide VHF Contest Start: 1800Z, Jul 15 Finish: 2100Z, Jul 16 Info: http://www.cqww-vhf.com/
2023-07-15 North American QSO Party, RTTY North American QSO Party, RTTY July 15, 2023 @ 2:00 pm - July 16, 2023 @ 2:00 am North American QSO Party, RTTY Start: 1800Z, Jul 15 Finish: 0600Z, Jul 16 Info: http://www.ncjweb.com/NAQP-Rules.pdf
2023-07-29 RSGB IOTA Contest RSGB IOTA Contest July 29, 2023 @ 8:00 am - July 30, 2023 @ 8:00 am RSGB IOTA Contest Start: 1200Z Finish: 1200Z Info: https://www.rsgbcc.org/hf/rules/2022/riota.shtml
2023-08-05 North American QSO Party, CW North American QSO Party, CW August 5, 2023 @ 2:00 pm - August 6, 2023 @ 2:00 pm North American QSO Party, CW Start: 1800Z, Aug 5 Finish: 0600Z, Aug 6 Info: http://www.ncjweb.com/NAQP-Rules.pdf
8:00 am - 8:59 pm European HF Championship August 5, 2023 @ 8:00 am - 8:59 pm European HF Championship Start: 1200Z, Aug 5 Finish: 2359Z, Aug 5 Info: https://euhf.s5cc.eu/euhfc_rules/