Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 4 29.  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)
 05/01/2021   06:57:55   (  70.16,  71.83) 05/01/2021   06:57:01  (  70.16,  71.85)    0.91                54
 05/01/2021   07:47:25   ( -70.04,-120.69) 05/01/2021   07:47:42  ( -70.02,-120.62)    3.52                17
 05/01/2021   08:37:06   (  69.16,  45.76) 05/01/2021   08:38:12  (  69.16,  47.95)   86.51                66
 05/03/2021   23:14:23   (  70.12,-172.34) 05/03/2021   23:13:58  (  70.14,-172.35)    2.54                25
 05/04/2021   00:03:53   ( -70.01,  -4.87) 05/04/2021   00:04:39  ( -69.99,  -4.81)    2.41                46
 05/06/2021   14:41:22   ( -70.24, 136.06) 05/06/2021   14:40:10  ( -70.23, 135.96)    3.73                72
 05/06/2021   15:30:50   (  70.07, -56.53) 05/06/2021   15:30:53  (  70.06, -56.47)    2.28                 3
 05/06/2021   16:20:21   ( -69.91, 110.88) 05/06/2021   16:21:34  ( -69.91, 111.07)    7.39                73
 05/09/2021   06:57:51   ( -70.13,-108.21) 05/09/2021   06:57:06  ( -70.15,-108.15)    2.87                45
 05/09/2021   07:47:18   (  70.02,  59.28) 05/09/2021   07:47:50  (  70.04,  59.32)    3.15                32
 05/11/2021   22:24:40   (  70.67,-159.16) 05/11/2021   22:23:30  (  70.71,-160.59)   52.69                70
 05/11/2021   23:14:18   ( -70.13,   7.68) 05/11/2021   23:14:03  ( -70.13,   7.64)    1.44                15
 05/12/2021   00:03:45   (  70.02, 175.16) 05/12/2021   00:04:47  (  70.03, 175.11)    2.07                62