Simultaneous Nadir Overpasses (SNOs) between NPP and LANDSAT-9
TLE Epoch: 2023 12 19.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 12/21/2023   06:32:47   ( -70.40,-102.21) 12/21/2023   06:33:58  ( -70.34,-101.66)   21.92                71
 12/21/2023   07:23:27   (  70.08,  65.60) 12/21/2023   07:23:28  (  70.07,  65.60)    0.84                 1
 12/21/2023   08:14:08   ( -69.94,-126.87) 12/21/2023   08:12:58  ( -69.96,-126.92)    3.05                70
 12/23/2023   22:49:34   ( -70.18,  13.92) 12/23/2023   22:50:29  ( -70.18,  13.99)    2.57                55
 12/23/2023   23:40:17   (  70.02,-178.52) 12/23/2023   23:39:57  (  70.02,-178.60)    2.69                20
 12/24/2023   00:30:46   ( -69.23, -10.07) 12/24/2023   00:29:38  ( -69.30, -11.94)   73.98                68
 12/26/2023   15:06:25   ( -70.12, 129.79) 12/26/2023   15:06:59  ( -70.09, 129.75)    2.99                34
 12/26/2023   15:57:09   (  70.01, -62.74) 12/26/2023   15:56:26  (  69.99, -62.76)    3.19                43
 12/29/2023   06:32:42   (  70.59,  77.52) 12/29/2023   06:33:52  (  70.47,  78.55)   40.66                70
 12/29/2023   07:23:16   ( -70.07,-114.35) 12/29/2023   07:23:27  ( -70.09,-114.37)    2.76                11
 12/29/2023   08:14:00   (  69.97,  53.11) 12/29/2023   08:12:54  (  69.98,  53.12)    1.43                66
 12/31/2023   22:49:26   (  70.18,-166.06) 12/31/2023   22:50:25  (  70.16,-166.01)    3.03                59
 12/31/2023   23:40:08   ( -70.08,   1.42) 12/31/2023   23:39:55  ( -70.06,   1.48)    3.14                13
 01/01/2024   00:30:41   (  69.40, 169.73) 01/01/2024   00:29:31  (  69.45, 168.28)   57.02                70