Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 12 19.  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)
 12/19/2018   06:08:45   ( -70.43, -95.32) 12/19/2018   06:07:33  ( -70.50, -96.14)   31.32                72
 12/19/2018   06:58:17   (  70.06,  71.79) 12/19/2018   06:58:11  (  70.07,  71.84)    2.38                 6
 12/19/2018   07:47:46   ( -70.00,-120.66) 12/19/2018   07:48:53  ( -69.98,-120.70)    2.93                67
 12/21/2018   22:25:19   ( -70.16,  20.16) 12/21/2018   22:24:20  ( -70.14,  20.19)    2.56                59
 12/21/2018   23:14:46   (  70.05,-172.34) 12/21/2018   23:15:04  (  70.03,-172.33)    2.65                18
 12/22/2018   00:04:27   ( -69.34,  -5.69) 12/22/2018   00:05:35  ( -69.35,  -4.02)   65.42                68
 12/24/2018   14:41:50   ( -70.13, 135.99) 12/24/2018   14:41:15  ( -70.15, 135.95)    2.94                35
 12/24/2018   15:31:17   (  70.02, -56.52) 12/24/2018   15:31:58  (  69.99, -56.51)    3.08                41
 12/27/2018   06:08:45   (  70.55,  84.85) 12/27/2018   06:07:34  (  70.58,  83.72)   42.07                71
 12/27/2018   06:58:21   ( -70.12,-108.15) 12/27/2018   06:58:09  ( -70.11,-108.22)    3.05                12
 12/27/2018   07:47:49   (  69.95,  59.26) 12/27/2018   07:48:52  (  69.96,  59.32)    2.09                63
 12/29/2018   22:25:23   (  70.18,-159.82) 12/29/2018   22:24:21  (  70.18,-159.88)    2.03                62
 12/29/2018   23:14:53   ( -70.08,   7.67) 12/29/2018   23:15:03  ( -70.07,   7.60)    2.52                10
 12/30/2018   00:04:29   (  69.47, 174.47) 12/30/2018   00:05:38  (  69.50, 175.77)   50.53                69
 01/01/2019   14:41:54   (  70.16, -43.98) 01/01/2019   14:41:14  (  70.15, -44.06)    3.25                40
 01/01/2019   15:31:25   ( -70.01, 123.43) 01/01/2019   15:31:56  ( -70.03, 123.43)    2.93                31