Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 6 16.  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)
 06/18/2021   06:58:15   (  70.06,  71.80) 06/18/2021   06:57:36  (  70.07,  71.87)    2.86                39
 06/18/2021   07:47:44   ( -70.00,-120.65) 06/18/2021   07:48:18  ( -69.97,-120.67)    2.58                34
 06/20/2021   22:25:09   ( -70.64,  20.89) 06/20/2021   22:23:59  ( -70.68,  19.36)   56.36                70
 06/20/2021   23:14:45   (  70.04,-172.33) 06/20/2021   23:14:33  (  70.04,-172.33)    0.38                12
 06/21/2021   00:04:15   ( -69.93,  -4.86) 06/21/2021   00:05:15  ( -69.94,  -4.86)    1.27                60
 06/23/2021   14:41:48   ( -70.13, 136.03) 06/23/2021   14:40:46  ( -70.13, 136.00)    1.43                62
 06/23/2021   15:31:15   (  70.03, -56.47) 06/23/2021   15:31:30  (  70.02, -56.53)    2.28                15
 06/23/2021   16:20:54   ( -69.43, 110.33) 06/23/2021   16:22:03  ( -69.44, 111.64)   51.38                69
 06/26/2021   06:58:18   ( -70.06,-108.19) 06/26/2021   06:57:41  ( -70.05,-108.12)    3.09                37
 06/26/2021   07:47:45   (  69.95,  59.30) 06/26/2021   07:48:25  (  69.94,  59.35)    2.27                40
 06/28/2021   22:25:14   (  70.36,-159.51) 06/28/2021   22:24:02  (  70.45,-160.29)   30.85                72
 06/28/2021   23:14:48   ( -70.04,   7.66) 06/28/2021   23:14:38  ( -70.03,   7.68)    1.51                10
 06/29/2021   00:04:15   (  69.93, 175.15) 06/29/2021   00:05:22  (  69.92, 175.15)    0.55                67