Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 4 14.  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)
 04/15/2021   06:58:04   (  70.17,  71.86) 04/15/2021   06:57:07  (  70.13,  71.86)    3.51                57
 04/15/2021   07:47:34   ( -70.05,-120.67) 04/15/2021   07:47:49  ( -70.06,-120.70)    1.19                15
 04/15/2021   08:37:13   (  69.28,  45.93) 04/15/2021   08:38:21  (  69.29,  47.73)   70.79                68
 04/17/2021   23:14:32   (  70.10,-172.36) 04/17/2021   23:13:59  (  70.09,-172.29)    3.01                33
 04/18/2021   00:04:02   ( -69.99,  -4.87) 04/18/2021   00:04:41  ( -70.00,  -4.85)    1.62                39
 04/20/2021   14:41:27   ( -70.53, 136.50) 04/20/2021   14:40:16  ( -70.58, 135.41)   40.79                71
 04/20/2021   15:31:00   (  70.09, -56.50) 04/20/2021   15:30:53  (  70.10, -56.53)    1.42                 7
 04/20/2021   16:20:30   ( -69.98, 110.99) 04/20/2021   16:21:34  ( -69.96, 111.00)    3.08                64
 04/23/2021   06:58:01   ( -70.19,-108.12) 04/23/2021   06:57:02  ( -70.17,-108.17)    2.56                59
 04/23/2021   07:47:28   (  70.07,  59.36) 04/23/2021   07:47:46  (  70.06,  59.31)    2.36                18
 04/23/2021   08:37:08   ( -69.42,-133.90) 04/23/2021   08:38:17  ( -69.38,-132.38)   59.86                69
 04/25/2021   23:14:30   ( -70.11,   7.65) 04/25/2021   23:13:55  ( -70.13,   7.67)    1.97                35
 04/26/2021   00:03:57   (  69.99, 175.13) 04/26/2021   00:04:39  (  70.02, 175.15)    2.94                42