Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 12 22.  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)
 12/24/2021   13:52:33   ( -70.86, 149.44) 12/24/2021   13:51:24  ( -70.90, 147.42)   73.81                69
 12/24/2021   14:42:12   (  70.10, -44.04) 12/24/2021   14:41:55  (  70.10, -44.00)    1.87                17
 12/24/2021   15:31:42   ( -69.99, 123.44) 12/24/2021   15:32:37  ( -70.02, 123.44)    2.64                55
 12/27/2021   06:09:13   ( -70.20, -95.66) 12/27/2021   06:08:03  ( -70.23, -95.72)    3.47                70
 12/27/2021   06:58:40   (  70.10,  71.83) 12/27/2021   06:58:47  (  70.11,  71.76)    2.93                 7
 12/27/2021   07:48:13   ( -69.82,-120.92) 12/27/2021   07:49:25  ( -69.81,-120.47)   17.05                72
 12/29/2021   22:25:42   ( -70.13,  20.13) 12/29/2021   22:24:53  ( -70.13,  20.20)    2.76                49
 12/29/2021   23:15:09   (  70.02,-172.39) 12/29/2021   23:15:37  (  70.02,-172.32)    2.57                28
 01/01/2022   13:52:25   (  71.03, -30.28) 01/01/2022   13:51:19  (  71.08, -32.87)   93.78                66
 01/01/2022   14:42:10   ( -70.11, 135.97) 01/01/2022   14:41:44  ( -70.10, 136.03)    2.54                26
 01/01/2022   15:31:37   (  70.00, -56.54) 01/01/2022   15:32:28  (  69.99, -56.49)    2.11                51
 01/04/2022   06:09:06   (  70.23,  84.40) 01/04/2022   06:07:53  (  70.21,  84.32)    3.54                73
 01/04/2022   06:58:37   ( -70.07,-108.19) 01/04/2022   06:58:34  ( -70.07,-108.14)    2.18                 3
 01/04/2022   07:48:05   (  69.90,  59.21) 01/04/2022   07:49:17  (  69.91,  59.41)    7.64                72