Simultaneous Nadir Overpasses (SNOs) between NPP and LANDSAT-9
TLE Epoch: 2023 12 20.  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   ( -70.41,-102.23) 12/21/2023   06:33:58  ( -70.33,-101.68)   22.64                71
 12/21/2023   07:23:27   (  70.09,  65.58) 12/21/2023   07:23:28  (  70.06,  65.59)    2.73                 1
 12/21/2023   08:14:08   ( -69.95,-126.88) 12/21/2023   08:12:58  ( -69.95,-126.94)    2.03                70
 12/23/2023   22:49:35   ( -70.19,  13.91) 12/23/2023   22:50:30  ( -70.16,  13.97)    3.44                55
 12/23/2023   23:40:18   (  70.02,-178.54) 12/23/2023   23:39:58  (  70.00,-178.61)    3.55                20
 12/24/2023   00:30:46   ( -69.24, -10.08) 12/24/2023   00:29:38  ( -69.29, -11.95)   73.96                68
 12/26/2023   15:06:25   ( -70.13, 129.78) 12/26/2023   15:06:58  ( -70.13, 129.81)    1.44                33
 12/26/2023   15:57:09   (  70.02, -62.75) 12/26/2023   15:56:25  (  70.03, -62.70)    2.13                44
 12/29/2023   06:32:42   (  70.60,  77.50) 12/29/2023   06:33:52  (  70.46,  78.53)   41.30                70
 12/29/2023   07:23:16   ( -70.08,-114.36) 12/29/2023   07:23:27  ( -70.07,-114.39)    1.06                11
 12/29/2023   08:14:00   (  69.98,  53.10) 12/29/2023   08:12:54  (  69.96,  53.10)    1.41                66
 12/31/2023   22:49:25   (  70.14,-165.99) 12/31/2023   22:50:25  (  70.14,-166.04)    1.70                60
 12/31/2023   23:40:07   ( -70.04,   1.48) 12/31/2023   23:39:55  ( -70.04,   1.45)    1.34                12
 01/01/2024   00:30:40   (  69.35, 169.79) 01/01/2024   00:29:31  (  69.43, 168.25)   60.87                69