Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 5 7.  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)
 05/09/2021   06:57:56   ( -70.10,-108.13) 05/09/2021   06:57:06  ( -70.11,-108.09)    1.62                50
 05/09/2021   07:47:22   (  70.00,  59.37) 05/09/2021   07:47:49  (  69.99,  59.40)    1.47                27
 05/11/2021   22:24:43   (  70.92,-158.66) 05/11/2021   22:23:36  (  71.01,-161.10)   89.29                67
 05/11/2021   23:14:27   ( -70.05,   7.68) 05/11/2021   23:14:02  ( -70.08,   7.72)    3.34                25
 05/12/2021   00:03:54   (  69.94, 175.17) 05/12/2021   00:04:46  (  69.97, 175.20)    2.57                52
 05/14/2021   14:41:28   (  70.16, -43.93) 05/14/2021   14:40:17  (  70.15, -43.95)    0.83                71
 05/14/2021   15:30:58   ( -70.05, 123.56) 05/14/2021   15:30:59  ( -70.05, 123.52)    1.42                 1
 05/14/2021   16:20:28   (  69.78, -69.18) 05/14/2021   16:21:40  (  69.78, -68.77)   16.04                72
 05/17/2021   06:58:00   (  70.10,  71.86) 05/17/2021   06:57:13  (  70.08,  71.93)    3.04                47
 05/17/2021   07:47:30   ( -70.00,-120.65) 05/17/2021   07:47:55  ( -69.98,-120.60)    2.86                25
 05/19/2021   22:24:50   ( -70.96,  21.39) 05/19/2021   22:23:43  ( -71.05,  18.82)   93.68                67
 05/19/2021   23:14:31   (  70.09,-172.27) 05/19/2021   23:14:10  (  70.06,-172.28)    2.99                21
 05/20/2021   00:04:01   ( -69.93,  -4.86) 05/20/2021   00:04:51  ( -69.95,  -4.80)    2.92                50