Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 4 26.  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)
 04/28/2021   14:41:23   (  70.41, -43.68) 04/28/2021   14:40:11  (  70.48, -44.42)   28.77                72
 04/28/2021   15:30:57   ( -70.08, 123.48) 04/28/2021   15:30:47  ( -70.08, 123.52)    1.86                10
 04/28/2021   16:20:24   (  69.97, -69.03) 04/28/2021   16:21:31  (  69.96, -68.99)    1.87                67
 05/01/2021   06:57:55   (  70.15,  71.83) 05/01/2021   06:56:59  (  70.18,  71.82)    3.68                56
 05/01/2021   07:47:25   ( -70.04,-120.69) 05/01/2021   07:47:40  ( -70.04,-120.64)    2.10                15
 05/01/2021   08:37:04   (  69.27,  45.90) 05/01/2021   08:38:11  (  69.24,  47.85)   76.86                67
 05/03/2021   23:14:22   (  70.16,-172.28) 05/03/2021   23:13:52  (  70.15,-172.35)    2.86                30
 05/04/2021   00:03:53   ( -70.00,  -4.87) 05/04/2021   00:04:33  ( -70.01,  -4.80)    2.55                40
 05/06/2021   14:41:18   ( -70.45, 136.37) 05/06/2021   14:40:06  ( -70.54, 135.51)   33.56                72
 05/06/2021   15:30:49   (  70.11, -56.47) 05/06/2021   15:30:44  (  70.12, -56.52)    2.31                 5
 05/06/2021   16:20:19   ( -70.01, 111.02) 05/06/2021   16:21:26  ( -70.02, 110.95)    3.20                67
 05/09/2021   06:57:50   ( -70.17,-108.14) 05/09/2021   06:56:53  ( -70.19,-108.16)    2.33                57
 05/09/2021   07:47:17   (  70.06,  59.33) 05/09/2021   07:47:36  (  70.04,  59.38)    2.46                19