Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 2 18.  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)
 02/18/2020   23:14:55   ( -70.09,   7.68) 02/18/2020   23:14:12  ( -70.08,   7.71)    2.35                43
 02/19/2020   00:04:22   (  69.99, 175.18) 02/19/2020   00:04:57  (  70.01, 175.12)    2.81                35
 02/21/2020   14:41:46   (  70.61, -43.32) 02/21/2020   14:40:36  (  70.68, -44.80)   55.02                70
 02/21/2020   15:31:24   ( -70.06, 123.51) 02/21/2020   15:31:08  ( -70.07, 123.49)    1.10                16
 02/21/2020   16:20:51   (  69.96, -68.99) 02/21/2020   16:21:52  (  69.95, -69.02)    1.42                61
 02/24/2020   06:58:22   (  70.13,  71.86) 02/24/2020   06:57:21  (  70.15,  71.81)    2.84                61
 02/24/2020   07:47:52   ( -70.03,-120.66) 02/24/2020   07:48:02  ( -70.01,-120.66)    1.94                10
 02/24/2020   08:37:28   (  69.42,  46.15) 02/24/2020   08:38:37  (  69.41,  47.53)   53.72                69
 02/26/2020   23:14:51   (  70.09,-172.32) 02/26/2020   23:14:16  (  70.10,-172.34)    1.10                35
 02/27/2020   00:04:21   ( -69.99,  -4.84) 02/27/2020   00:04:58  ( -70.01,  -4.89)    2.84                37
 02/29/2020   14:41:46   ( -70.54, 136.57) 02/29/2020   14:40:35  ( -70.58, 135.36)   44.80                71
 02/29/2020   15:31:20   (  70.05, -56.51) 02/29/2020   15:31:11  (  70.05, -56.50)    0.48                 9
 02/29/2020   16:20:50   ( -69.94, 110.98) 02/29/2020   16:21:53  ( -69.95, 110.96)    1.30                63