Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 4 28.  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)
 04/28/2018   13:51:24   (  70.95, -30.49) 04/28/2018   13:50:16  (  71.01, -32.70)   80.22                68
 04/28/2018   14:41:06   ( -70.18, 135.99) 04/28/2018   14:40:44  ( -70.18, 135.97)    0.86                22
 04/28/2018   15:30:33   (  70.08, -56.51) 04/28/2018   15:31:28  (  70.07, -56.56)    2.31                55
 05/01/2018   06:08:05   (  70.22,  84.29) 05/01/2018   06:06:57  (  70.24,  84.32)    2.93                68
 05/01/2018   06:57:34   ( -70.16,-108.16) 05/01/2018   06:57:39  ( -70.14,-108.21)    2.57                 5
 05/01/2018   07:47:07   (  69.72,  58.88) 05/01/2018   07:48:17  (  69.72,  59.74)   33.27                70
 05/03/2018   22:24:33   (  70.19,-159.88) 05/03/2018   22:23:52  (  70.21,-159.86)    2.56                41
 05/03/2018   23:14:03   ( -70.08,   7.60) 05/03/2018   23:14:34  ( -70.11,   7.61)    3.33                31
 05/06/2018   13:51:23   ( -70.81, 149.28) 05/06/2018   13:50:13  ( -70.86, 147.56)   62.91                70
 05/06/2018   14:41:00   (  70.16, -44.04) 05/06/2018   14:40:46  (  70.18, -44.05)    3.06                14
 05/06/2018   15:30:30   ( -70.05, 123.44) 05/06/2018   15:31:28  ( -70.08, 123.43)    3.23                58
 05/09/2018   06:08:01   ( -70.23, -95.70) 05/09/2018   06:06:57  ( -70.25, -95.70)    2.63                64
 05/09/2018   06:57:28   (  70.12,  71.78) 05/09/2018   06:57:40  (  70.10,  71.85)    2.94                12
 05/09/2018   07:47:05   ( -69.63,-121.27) 05/09/2018   07:48:15  ( -69.63,-120.12)   44.25                70
 05/11/2018   22:24:29   ( -70.19,  20.12) 05/11/2018   22:23:51  ( -70.18,  20.20)    3.49                38
 05/11/2018   23:13:56   (  70.08,-172.40) 05/11/2018   23:14:35  (  70.08,-172.34)    2.17                39