Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 6 30.  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)
 07/01/2021   14:41:49   (  70.07, -44.04) 07/01/2021   14:40:53  (  70.09, -43.97)    3.36                56
 07/01/2021   15:31:18   ( -70.01, 123.51) 07/01/2021   15:31:35  ( -70.00, 123.49)    1.46                17
 07/01/2021   16:20:59   (  69.14, -70.03) 07/01/2021   16:22:05  (  69.14, -67.95)   82.51                66
 07/04/2021   06:58:17   (  70.09,  71.87) 07/04/2021   06:57:49  (  70.07,  71.82)    2.96                28
 07/04/2021   07:47:47   ( -69.98,-120.65) 07/04/2021   07:48:31  ( -69.98,-120.72)    2.48                44
 07/06/2021   22:25:18   ( -70.27,  20.36) 07/06/2021   22:24:05  ( -70.33,  19.88)   19.07                73
 07/06/2021   23:14:48   (  70.00,-172.38) 07/06/2021   23:14:45  (  70.00,-172.31)    2.82                 3
 07/07/2021   00:04:18   ( -69.89,  -4.90) 07/07/2021   00:05:27  ( -69.91,  -4.85)    2.75                69
 07/09/2021   14:41:50   ( -70.12, 136.03) 07/09/2021   14:40:58  ( -70.10, 136.00)    2.52                52
 07/09/2021   15:31:17   (  70.01, -56.48) 07/09/2021   15:31:42  (  69.99, -56.52)    2.89                25
 07/09/2021   16:21:02   ( -69.08, 109.90) 07/09/2021   16:22:09  ( -69.10, 112.09)   87.13                67
 07/12/2021   06:08:35   (  71.00,  85.60) 07/12/2021   06:07:29  (  71.02,  82.96)   95.43                66
 07/12/2021   06:58:20   ( -70.08,-108.15) 07/12/2021   06:57:55  ( -70.09,-108.21)    2.64                25
 07/12/2021   07:47:47   (  69.96,  59.34) 07/12/2021   07:48:39  (  69.98,  59.27)    3.07                52