N/A 31 2857 2850 2853 2855 Image2021-08-18 18:27:53 UTCSIDC regions2021-08-17 07:30:00 UTCINAF/OACT regions2021-08-18 09:00:00 UTCNOAA regions2021-08-18 00:00:00 UTCNOAA returning regions2021-08-18 00:00:00 UTCNOAA plages2021-08-18 00:00:00 UTCSIDC Coronal Holes2021-08-18 20:00:05 UTC