Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 12 28.  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)
 12/29/2018   22:25:17   (  70.17,-159.82) 12/29/2018   22:24:20  (  70.15,-159.83)    2.39                57
 12/29/2018   23:14:47   ( -70.06,   7.66) 12/29/2018   23:15:02  ( -70.05,   7.64)    1.41                15
 12/30/2018   00:04:26   (  69.29, 174.26) 12/30/2018   00:05:34  (  69.30, 176.04)   70.03                68
 01/01/2019   14:41:47   (  70.11, -44.01) 01/01/2019   14:41:14  (  70.12, -44.01)    0.19                33
 01/01/2019   15:31:17   ( -70.01, 123.47) 01/01/2019   15:31:56  ( -70.01, 123.46)    0.84                39
 01/04/2019   06:08:43   ( -70.55, -95.14) 01/04/2019   06:07:32  ( -70.61, -96.32)   44.12                71
 01/04/2019   06:58:17   (  70.06,  71.79) 01/04/2019   06:58:08  (  70.09,  71.80)    3.32                 9
 01/04/2019   07:47:47   ( -69.95,-120.73) 01/04/2019   07:48:50  ( -69.98,-120.72)    3.23                63
 01/06/2019   22:25:18   ( -70.17,  20.18) 01/06/2019   22:24:17  ( -70.16,  20.15)    1.23                61
 01/06/2019   23:14:45   (  70.05,-172.34) 01/06/2019   23:15:01  (  70.06,-172.39)    2.00                16
 01/07/2019   00:04:24   ( -69.46,  -5.53) 01/07/2019   00:05:33  ( -69.42,  -4.13)   54.68                69
 01/09/2019   14:41:48   ( -70.11, 135.97) 01/09/2019   14:41:11  ( -70.13, 135.97)    2.79                37
 01/09/2019   15:31:15   (  69.99, -56.55) 01/09/2019   15:31:54  (  69.98, -56.50)    1.98                39