Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 4 6.  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)
 04/07/2018   06:08:10   ( -70.74, -94.93) 04/07/2018   06:07:00  ( -70.76, -96.49)   57.03                70
 04/07/2018   06:57:46   (  70.15,  71.84) 04/07/2018   06:57:34  (  70.12,  71.83)    2.43                12
 04/07/2018   07:47:16   ( -70.03,-120.69) 04/07/2018   07:48:16  ( -70.03,-120.71)    0.65                60
 04/09/2018   22:24:47   ( -70.22,  20.19) 04/09/2018   22:23:46  ( -70.23,  20.12)    2.73                61
 04/09/2018   23:14:15   (  70.07,-172.39) 04/09/2018   23:14:29  (  70.07,-172.32)    2.76                14
 04/10/2018   00:03:53   ( -69.51,  -5.52) 04/10/2018   00:05:02  ( -69.50,  -4.15)   53.24                69
 04/12/2018   14:41:15   ( -70.20, 136.03) 04/12/2018   14:40:41  ( -70.18, 135.97)    3.09                34
 04/12/2018   15:30:43   (  70.04, -56.55) 04/12/2018   15:31:24  (  70.03, -56.48)    2.90                41
 04/15/2018   06:08:11   (  70.39,  84.55) 04/15/2018   06:06:58  (  70.45,  84.00)   21.94                73
 04/15/2018   06:57:44   ( -70.12,-108.21) 04/15/2018   06:57:36  ( -70.14,-108.19)    2.19                 8
 04/15/2018   07:47:11   (  70.01,  59.28) 04/15/2018   07:48:20  (  70.04,  59.27)    3.42                69
 04/17/2018   22:24:41   (  70.19,-159.86) 04/17/2018   22:23:48  (  70.20,-159.84)    1.69                53
 04/17/2018   23:14:11   ( -70.08,   7.63) 04/17/2018   23:14:30  ( -70.09,   7.65)    1.12                19