Simultaneous Nadir Overpasses (SNOs) between NPP and LANDSAT-9
TLE Epoch: 2022 12 15.  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)
 12/15/2022   14:16:25   ( -70.26, 142.18) 12/15/2022   14:17:37  ( -70.23, 142.32)    6.01                72
 12/15/2022   15:07:08   (  70.08, -50.24) 12/15/2022   15:07:05  (  70.08, -50.25)    0.71                 3
 12/15/2022   15:57:48   ( -69.89, 117.37) 12/15/2022   15:56:36  ( -69.91, 117.14)    8.99                72
 12/18/2022   06:33:22   ( -70.16,-101.90) 12/18/2022   06:34:07  ( -70.15,-101.92)    1.25                45
 12/18/2022   07:24:06   (  70.03,  65.60) 12/18/2022   07:23:34  (  70.04,  65.58)    1.24                32
 12/20/2022   21:59:49   (  70.78,-154.46) 12/20/2022   22:00:58  (  70.64,-152.94)   57.95                69
 12/20/2022   22:50:20   ( -70.11,  13.92) 12/20/2022   22:50:36  ( -70.09,  13.89)    2.88                16
 12/20/2022   23:41:04   (  69.99,-178.58) 12/20/2022   23:40:03  (  69.98,-178.62)    1.84                61
 12/23/2022   14:16:35   (  70.17, -37.72) 12/23/2022   14:17:33  (  70.18, -37.74)    0.72                58
 12/23/2022   15:07:17   ( -70.08, 129.74) 12/23/2022   15:07:03  ( -70.07, 129.74)    1.08                14
 12/23/2022   15:57:49   (  69.33, -61.84) 12/23/2022   15:56:40  (  69.41, -63.52)   66.68                69
 12/26/2022   06:33:33   (  70.15,  78.08) 12/26/2022   06:34:01  (  70.13,  78.08)    2.03                28
 12/26/2022   07:24:15   ( -70.05,-114.45) 12/26/2022   07:23:31  ( -70.03,-114.43)    2.88                44
 12/28/2022   21:59:49   ( -70.34,  26.23) 12/28/2022   22:01:00  ( -70.29,  26.56)   13.64                71
 12/28/2022   22:50:31   (  70.13,-166.13) 12/28/2022   22:50:28  (  70.12,-166.05)    3.36                 3
 12/28/2022   23:41:12   ( -69.98,   1.42) 12/28/2022   23:39:59  ( -69.96,   1.37)    2.75                73