Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 4 30.  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)
 04/30/2020   22:24:54   ( -70.20,  20.11) 04/30/2020   22:23:40  ( -70.21,  20.13)    1.81                74
 04/30/2020   23:14:21   (  70.09,-172.40) 04/30/2020   23:14:24  (  70.10,-172.39)    1.29                 3
 05/01/2020   00:03:52   ( -69.92,  -4.99) 05/01/2020   00:05:05  ( -69.95,  -4.85)    6.32                73
 05/03/2020   14:41:21   ( -70.17, 135.96) 05/03/2020   14:40:33  ( -70.16, 135.99)    2.19                48
 05/03/2020   15:30:48   (  70.06, -56.56) 05/03/2020   15:31:17  (  70.04, -56.53)    1.80                29
 05/06/2020   06:08:07   (  70.90,  85.29) 05/06/2020   06:06:59  (  70.94,  83.19)   76.34                68
 05/06/2020   06:57:49   ( -70.14,-108.20) 05/06/2020   06:57:28  ( -70.15,-108.24)    1.66                21
 05/06/2020   07:47:16   (  70.03,  59.28) 05/06/2020   07:48:12  (  70.05,  59.24)    2.71                56
 05/08/2020   22:24:47   (  70.21,-159.86) 05/08/2020   22:23:40  (  70.20,-159.86)    0.64                67
 05/08/2020   23:14:17   ( -70.11,   7.63) 05/08/2020   23:14:22  ( -70.10,   7.62)    1.08                 5
 05/09/2020   00:03:50   (  69.66, 174.65) 05/09/2020   00:05:00  (  69.68, 175.56)   35.24                70
 05/11/2020   14:41:15   (  70.17, -44.04) 05/11/2020   14:40:34  (  70.16, -44.01)    1.77                41
 05/11/2020   15:30:45   ( -70.07, 123.46) 05/11/2020   15:31:16  ( -70.05, 123.47)    2.45                31