Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 5 1.  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)
 05/01/2019   14:41:21   ( -70.15, 136.00) 05/01/2019   14:40:37  ( -70.15, 136.03)    1.16                44
 05/01/2019   15:30:48   (  70.04, -56.51) 05/01/2019   15:31:21  (  70.03, -56.49)    1.06                33
 05/04/2019   06:08:12   (  70.85,  85.27) 05/04/2019   06:07:04  (  70.88,  83.30)   72.00                68
 05/04/2019   06:57:53   ( -70.15,-108.14) 05/04/2019   06:57:34  ( -70.15,-108.22)    2.97                19
 05/04/2019   07:47:21   (  69.98,  59.27) 05/04/2019   07:48:17  (  69.99,  59.34)    2.70                56
 05/06/2019   22:24:57   (  70.19,-159.85) 05/06/2019   22:23:48  (  70.21,-159.86)    1.80                69
 05/06/2019   23:14:27   ( -70.10,   7.65) 05/06/2019   23:14:30  ( -70.11,   7.62)    1.51                 3
 05/07/2019   00:03:58   (  69.76, 174.83) 05/07/2019   00:05:09  (  69.73, 175.49)   25.55                71
 05/09/2019   14:41:30   (  70.19, -43.99) 05/09/2019   14:40:43  (  70.17, -44.03)    3.34                47
 05/09/2019   15:31:01   ( -70.05, 123.44) 05/09/2019   15:31:25  ( -70.06, 123.45)    1.78                24
 05/12/2019   06:58:06   (  70.14,  71.80) 05/12/2019   06:57:39  (  70.13,  71.80)    1.70                27
 05/12/2019   07:47:37   ( -70.00,-120.78) 05/12/2019   07:48:21  ( -70.02,-120.72)    3.19                44
 05/14/2019   22:25:10   ( -70.54,  20.58) 05/14/2019   22:23:59  ( -70.61,  19.50)   40.63                71
 05/14/2019   23:14:43   (  70.10,-172.42) 05/14/2019   23:14:35  (  70.09,-172.38)    1.68                 8
 05/15/2019   00:04:13   ( -70.01,  -4.92) 05/15/2019   00:05:17  ( -69.98,  -4.90)    3.28                64