Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 4 29.  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   22:24:53   ( -70.23,  20.16) 04/30/2020   22:23:40  ( -70.23,  20.10)    2.55                73
 04/30/2020   23:14:20   (  70.12,-172.35) 04/30/2020   23:14:24  (  70.12,-172.42)    2.70                 4
 05/01/2020   00:03:51   ( -69.96,  -4.95) 05/01/2020   00:05:04  ( -69.92,  -4.80)    6.47                73
 05/03/2020   14:41:21   ( -70.20, 136.00) 05/03/2020   14:40:34  ( -70.18, 135.95)    3.19                47
 05/03/2020   15:30:48   (  70.09, -56.51) 05/03/2020   15:31:18  (  70.07, -56.57)    2.93                30
 05/06/2020   06:08:08   (  70.88,  85.25) 05/06/2020   06:07:00  (  70.96,  83.15)   77.04                68
 05/06/2020   06:57:50   ( -70.12,-108.24) 05/06/2020   06:57:28  ( -70.13,-108.19)    1.93                22
 05/06/2020   07:47:17   (  70.00,  59.24) 05/06/2020   07:48:12  (  70.02,  59.28)    2.63                55
 05/08/2020   22:24:47   (  70.18,-159.90) 05/08/2020   22:23:39  (  70.18,-159.82)    3.05                68
 05/08/2020   23:14:17   ( -70.09,   7.59) 05/08/2020   23:14:21  ( -70.08,   7.66)    2.57                 4
 05/09/2020   00:03:49   (  69.69, 174.69) 05/09/2020   00:05:00  (  69.71, 175.52)   32.03                71
 05/11/2020   14:41:14   (  70.20, -44.00) 05/11/2020   14:40:34  (  70.19, -44.06)    2.49                40
 05/11/2020   15:30:44   ( -70.10, 123.50) 05/11/2020   15:31:16  ( -70.08, 123.42)    3.58                32