Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 4 15.  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)
 04/15/2019   14:41:22   ( -70.18, 136.01) 04/15/2019   14:40:27  ( -70.18, 136.01)    0.13                55
 04/15/2019   15:30:49   (  70.08, -56.49) 04/15/2019   15:31:11  (  70.06, -56.50)    1.54                22
 04/15/2019   16:20:32   ( -69.25, 110.02) 04/15/2019   16:21:39  ( -69.23, 112.04)   79.63                67
 04/18/2019   06:57:51   ( -70.13,-108.18) 04/18/2019   06:57:23  ( -70.12,-108.13)    2.28                28
 04/18/2019   07:47:18   (  70.02,  59.31) 04/18/2019   07:48:07  (  70.01,  59.35)    2.43                49
 04/20/2019   22:24:49   (  70.24,-159.78) 04/20/2019   22:23:38  (  70.21,-159.83)    3.26                71
 04/20/2019   23:14:19   ( -70.14,   7.70) 04/20/2019   23:14:20  ( -70.12,   7.64)    3.19                 1
 04/21/2019   00:03:49   (  69.86, 174.96) 04/21/2019   00:05:01  (  69.85, 175.36)   15.45                72
 04/23/2019   14:41:17   (  70.18, -43.99) 04/23/2019   14:40:33  (  70.16, -43.98)    2.04                44
 04/23/2019   15:30:47   ( -70.08, 123.50) 04/23/2019   15:31:15  ( -70.06, 123.49)    2.30                28
 04/26/2019   06:08:07   ( -70.89, -94.70) 04/26/2019   06:06:59  ( -70.95, -96.79)   76.33                68
 04/26/2019   06:57:46   (  70.12,  71.80) 04/26/2019   06:57:29  (  70.11,  71.86)    2.19                17
 04/26/2019   07:47:16   ( -70.02,-120.70) 04/26/2019   07:48:11  ( -70.01,-120.66)    2.23                55
 04/28/2019   22:24:47   ( -70.23,  20.20) 04/28/2019   22:23:42  ( -70.22,  20.15)    2.42                65
 04/28/2019   23:14:14   (  70.11,-172.33) 04/28/2019   23:14:26  (  70.12,-172.39)    2.29                12
 04/29/2019   00:03:51   ( -69.63,  -5.36) 04/29/2019   00:05:01  ( -69.64,  -4.35)   39.18                70