Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 7 1.  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)
 07/04/2021   06:58:18   (  70.04,  71.80) 07/04/2021   06:57:49  (  70.07,  71.83)    3.08                29
 07/04/2021   07:47:47   ( -69.98,-120.65) 07/04/2021   07:48:31  ( -69.98,-120.72)    2.57                44
 07/06/2021   22:25:18   ( -70.27,  20.37) 07/06/2021   22:24:05  ( -70.33,  19.88)   19.19                73
 07/06/2021   23:14:48   (  70.00,-172.37) 07/06/2021   23:14:45  (  70.00,-172.30)    2.61                 3
 07/07/2021   00:04:18   ( -69.89,  -4.89) 07/07/2021   00:05:27  ( -69.91,  -4.85)    2.52                69
 07/09/2021   14:41:50   ( -70.12, 136.04) 07/09/2021   14:40:58  ( -70.11, 136.00)    2.55                52
 07/09/2021   15:31:17   (  70.02, -56.47) 07/09/2021   15:31:42  (  69.99, -56.52)    3.30                25
 07/09/2021   16:21:02   ( -69.08, 109.90) 07/09/2021   16:22:09  ( -69.10, 112.09)   86.76                67
 07/12/2021   06:08:35   (  71.00,  85.60) 07/12/2021   06:07:29  (  71.03,  82.95)   96.04                66
 07/12/2021   06:58:20   ( -70.08,-108.14) 07/12/2021   06:57:55  ( -70.10,-108.22)    3.48                25
 07/12/2021   07:47:48   (  69.91,  59.27) 07/12/2021   07:48:38  (  69.93,  59.34)    3.33                50
 07/14/2021   22:25:19   (  70.13,-159.82) 07/14/2021   22:24:08  (  70.13,-159.83)    0.55                71
 07/14/2021   23:14:49   ( -70.03,   7.67) 07/14/2021   23:14:50  ( -70.03,   7.63)    1.46                 1
 07/15/2021   00:04:19   (  69.75, 174.92) 07/15/2021   00:05:31  (  69.77, 175.35)   16.45                72