Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 4 20.  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)
 04/20/2019   22:24:49   (  70.20,-159.84) 04/20/2019   22:23:37  (  70.20,-159.80)    1.86                72
 04/20/2019   23:14:19   ( -70.09,   7.63) 04/20/2019   23:14:19  ( -70.10,   7.67)    2.33                 0
 04/21/2019   00:03:48   (  69.87, 174.97) 04/21/2019   00:05:00  (  69.83, 175.39)   16.53                72
 04/23/2019   14:41:17   (  70.19, -43.98) 04/23/2019   14:40:33  (  70.16, -43.97)    3.09                44
 04/23/2019   15:30:47   ( -70.08, 123.50) 04/23/2019   15:31:15  ( -70.06, 123.50)    2.21                28
 04/26/2019   06:08:07   ( -70.88, -94.71) 04/26/2019   06:06:59  ( -70.97, -96.81)   77.03                68
 04/26/2019   06:57:46   (  70.12,  71.80) 04/26/2019   06:57:29  (  70.13,  71.84)    2.17                17
 04/26/2019   07:47:16   ( -70.01,-120.71) 04/26/2019   07:48:11  ( -70.03,-120.69)    1.83                55
 04/28/2019   22:24:47   ( -70.21,  20.17) 04/28/2019   22:23:41  ( -70.21,  20.17)    0.32                66
 04/28/2019   23:14:14   (  70.10,-172.35) 04/28/2019   23:14:25  (  70.11,-172.37)    1.79                11
 04/29/2019   00:03:50   ( -69.67,  -5.31) 04/29/2019   00:05:01  ( -69.69,  -4.41)   34.78                71
 05/01/2019   14:41:14   ( -70.19, 136.02) 05/01/2019   14:40:36  ( -70.20, 135.95)    2.63                38
 05/01/2019   15:30:41   (  70.07, -56.50) 05/01/2019   15:31:19  (  70.05, -56.51)    2.52                38