Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 5 17.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 05/18/2025   06:19:54   (  70.19,  81.21) 05/18/2025   06:20:42  (  70.18,  81.26)    2.11                48
 05/18/2025   07:10:35   ( -70.06,-111.26) 05/18/2025   07:10:12  ( -70.06,-111.27)    0.96                23
 05/20/2025   21:46:24   ( -71.16,  28.09) 05/20/2025   21:47:30  ( -71.04,  30.80)   98.52                66
 05/20/2025   22:36:51   (  70.14,-162.95) 05/20/2025   22:37:12  (  70.12,-162.93)    1.84                21
 05/20/2025   23:27:32   ( -70.01,   4.57) 05/20/2025   23:26:42  ( -70.01,   4.54)    1.28                50
 05/23/2025   14:03:03   ( -70.23, 145.37) 05/23/2025   14:04:13  ( -70.21, 145.43)    2.85                70
 05/23/2025   14:53:47   (  70.10, -47.12) 05/23/2025   14:53:40  (  70.11, -47.08)    2.11                 7
 05/23/2025   15:44:25   ( -69.81, 120.63) 05/23/2025   15:43:12  ( -69.89, 120.25)   17.19                73
 05/26/2025   06:19:59   ( -70.14, -98.73) 05/26/2025   06:20:43  ( -70.12, -98.81)    3.28                44
 05/26/2025   07:10:44   (  70.06,  68.69) 05/26/2025   07:10:09  (  70.07,  68.76)    2.53                35
 05/28/2025   21:46:24   (  70.71,-151.20) 05/28/2025   21:47:34  (  70.61,-149.84)   51.26                70
 05/28/2025   22:36:56   ( -70.10,  17.08) 05/28/2025   22:37:11  ( -70.12,  17.08)    1.81                15
 05/28/2025   23:27:41   (  70.03,-175.50) 05/28/2025   23:26:38  (  70.01,-175.44)    3.14                63