Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 12 26.  Predictions up to the next  14.0 days:

     Date     Time(LANDSAT-8) LANDSAT-8 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/27/2021   06:09:13   ( -70.20, -95.66) 12/27/2021   06:08:02  ( -70.17, -95.64)    3.35                71
 12/27/2021   06:58:40   (  70.10,  71.84) 12/27/2021   06:58:47  (  70.10,  71.77)    2.42                 7
 12/27/2021   07:48:13   ( -69.82,-120.92) 12/27/2021   07:49:25  ( -69.81,-120.47)   17.28                72
 12/29/2021   22:25:41   ( -70.18,  20.20) 12/29/2021   22:24:54  ( -70.19,  20.12)    2.93                47
 12/29/2021   23:15:09   (  70.02,-172.39) 12/29/2021   23:15:37  (  70.02,-172.31)    3.01                28
 01/01/2022   13:52:24   (  71.03, -30.28) 01/01/2022   13:51:18  (  71.08, -32.86)   93.33                66
 01/01/2022   14:42:09   ( -70.10, 135.96) 01/01/2022   14:41:43  ( -70.10, 136.03)    2.73                26
 01/01/2022   15:31:36   (  69.99, -56.55) 01/01/2022   15:32:27  (  69.99, -56.48)    2.49                51
 01/04/2022   06:09:06   (  70.22,  84.39) 01/04/2022   06:07:53  (  70.21,  84.32)    2.60                73
 01/04/2022   06:58:37   ( -70.06,-108.21) 01/04/2022   06:58:34  ( -70.07,-108.14)    2.93                 3
 01/04/2022   07:48:05   (  69.89,  59.20) 01/04/2022   07:49:17  (  69.91,  59.42)    8.36                72
 01/06/2022   22:25:34   (  70.17,-159.80) 01/06/2022   22:24:43  (  70.14,-159.78)    3.16                51
 01/06/2022   23:15:04   ( -70.06,   7.68) 01/06/2022   23:15:25  ( -70.05,   7.68)    1.82                21