Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 4 22.  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)
 04/23/2018   06:08:10   ( -70.26, -95.65) 04/23/2018   06:06:56  ( -70.31, -95.77)    6.84                74
 04/23/2018   06:57:37   (  70.16,  71.85) 04/23/2018   06:57:39  (  70.15,  71.78)    3.21                 2
 04/23/2018   07:47:08   ( -69.99,-120.75) 04/23/2018   07:48:20  ( -69.99,-120.67)    3.25                72
 04/25/2018   22:24:38   ( -70.20,  20.14) 04/25/2018   22:23:49  ( -70.21,  20.14)    1.82                49
 04/25/2018   23:14:05   (  70.09,-172.36) 04/25/2018   23:14:33  (  70.11,-172.39)    2.24                28
 04/28/2018   13:51:24   (  70.95, -30.49) 04/28/2018   13:50:16  (  71.02, -32.71)   80.80                68
 04/28/2018   14:41:06   ( -70.19, 136.00) 04/28/2018   14:40:44  ( -70.18, 135.96)    1.54                22
 04/28/2018   15:30:33   (  70.08, -56.51) 04/28/2018   15:31:28  (  70.08, -56.57)    2.42                55
 05/01/2018   06:08:05   (  70.22,  84.30) 05/01/2018   06:06:57  (  70.26,  84.30)    3.67                68
 05/01/2018   06:57:35   ( -70.12,-108.22) 05/01/2018   06:57:39  ( -70.15,-108.22)    3.45                 4
 05/01/2018   07:47:07   (  69.73,  58.88) 05/01/2018   07:48:17  (  69.73,  59.72)   32.28                70
 05/03/2018   22:24:33   (  70.20,-159.86) 05/03/2018   22:23:52  (  70.23,-159.89)    3.30                41
 05/03/2018   23:14:03   ( -70.10,   7.63) 05/03/2018   23:14:34  ( -70.12,   7.60)    2.56                31