Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 7 29.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 07/30/2023   23:51:02   (  70.00, 178.38) 07/30/2023   23:51:40  (  70.00, 178.35)    0.90                38
 07/31/2023   00:41:44   ( -69.90, -14.17) 07/31/2023   00:41:10  ( -69.88, -14.18)    2.74                34
 08/02/2023   15:17:25   ( -70.88, 125.45) 08/02/2023   15:18:32  ( -70.77, 127.72)   83.87                67
 08/02/2023   16:07:54   (  69.99, -65.83) 08/02/2023   16:08:12  (  69.96, -65.82)    2.97                18
 08/02/2023   16:58:35   ( -69.84, 101.71) 08/02/2023   16:57:42  ( -69.85, 101.65)    2.38                53
 08/05/2023   07:34:03   ( -70.14,-117.59) 08/05/2023   07:35:15  ( -70.11,-117.37)    8.73                72
 08/05/2023   08:24:45   (  69.93,  50.04) 08/05/2023   08:24:43  (  69.96,  50.05)    2.80                 2
 08/05/2023   09:15:26   ( -69.83,-142.50) 08/05/2023   09:14:12  ( -69.85,-142.47)    1.74                74
 08/07/2023   23:50:52   ( -70.04,  -1.65) 08/07/2023   23:51:46  ( -70.03,  -1.61)    1.60                54
 08/08/2023   00:41:36   (  69.93, 165.81) 08/08/2023   00:41:13  (  69.93, 165.89)    2.95                23
 08/08/2023   01:32:04   ( -69.09, -25.66) 08/08/2023   01:30:56  ( -69.10, -27.59)   76.73                68
 08/10/2023   16:07:43   ( -69.99, 114.20) 08/10/2023   16:08:17  ( -69.98, 114.20)    0.65                34
 08/10/2023   16:58:27   (  69.89, -78.34) 08/10/2023   16:57:44  (  69.87, -78.31)    2.23                43