Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 7 6.  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)
 07/06/2021   23:14:48   (  70.01,-172.37) 07/06/2021   23:14:45  (  70.00,-172.30)    2.87                 3
 07/07/2021   00:04:18   ( -69.89,  -4.90) 07/07/2021   00:05:27  ( -69.91,  -4.85)    2.97                69
 07/09/2021   14:41:50   ( -70.12, 136.03) 07/09/2021   14:40:58  ( -70.11, 136.00)    2.44                52
 07/09/2021   15:31:18   (  69.97, -56.54) 07/09/2021   15:31:42  (  69.98, -56.51)    2.35                24
 07/09/2021   16:21:02   ( -69.08, 109.90) 07/09/2021   16:22:09  ( -69.10, 112.09)   86.85                67
 07/12/2021   06:08:36   (  70.96,  85.53) 07/12/2021   06:07:29  (  71.02,  82.97)   93.14                67
 07/12/2021   06:58:20   ( -70.08,-108.14) 07/12/2021   06:57:55  ( -70.09,-108.22)    3.09                25
 07/12/2021   07:47:48   (  69.92,  59.28) 07/12/2021   07:48:38  (  69.92,  59.35)    2.88                50
 07/14/2021   22:25:19   (  70.14,-159.81) 07/14/2021   22:24:08  (  70.12,-159.81)    2.46                71
 07/14/2021   23:14:49   ( -70.04,   7.68) 07/14/2021   23:14:50  ( -70.03,   7.65)    1.51                 1
 07/15/2021   00:04:19   (  69.76, 174.94) 07/15/2021   00:05:31  (  69.75, 175.37)   16.66                72
 07/17/2021   14:41:49   (  70.09, -44.00) 07/17/2021   14:41:05  (  70.11, -44.03)    2.94                44
 07/17/2021   15:31:19   ( -69.99, 123.49) 07/17/2021   15:31:46  ( -69.96, 123.51)    2.50                27
 07/20/2021   06:08:39   ( -70.85, -94.62) 07/20/2021   06:07:31  ( -70.90, -96.83)   80.78                68
 07/20/2021   06:58:19   (  70.03,  71.80) 07/20/2021   06:58:01  (  70.05,  71.82)    2.54                18
 07/20/2021   07:47:49   ( -69.93,-120.70) 07/20/2021   07:48:43  ( -69.96,-120.71)    2.72                54