Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2018 12 24.  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)
 12/24/2018   14:41:48   ( -70.14, 136.02) 12/24/2018   14:41:15  ( -70.14, 135.96)    2.40                33
 12/24/2018   15:31:16   (  69.98, -56.56) 12/24/2018   15:31:58  (  69.98, -56.49)    2.73                42
 12/27/2018   06:08:44   (  70.43,  84.69) 12/27/2018   06:07:32  (  70.47,  83.90)   29.49                72
 12/27/2018   06:58:18   ( -70.10,-108.15) 12/27/2018   06:58:09  ( -70.10,-108.21)    2.30                 9
 12/27/2018   07:47:46   (  69.94,  59.26) 12/27/2018   07:48:52  (  69.94,  59.34)    2.74                66
 12/29/2018   22:25:17   (  70.17,-159.81) 12/29/2018   22:24:20  (  70.17,-159.86)    2.14                57
 12/29/2018   23:14:47   ( -70.07,   7.67) 12/29/2018   23:15:02  ( -70.06,   7.61)    2.33                15
 12/30/2018   00:04:26   (  69.30, 174.26) 12/30/2018   00:05:34  (  69.32, 176.01)   68.68                68
 01/01/2019   14:41:47   (  70.14, -43.99) 01/01/2019   14:41:14  (  70.14, -44.04)    2.14                33
 01/01/2019   15:31:17   ( -70.03, 123.50) 01/01/2019   15:31:56  ( -70.03, 123.43)    2.44                39
 01/04/2019   06:08:43   ( -70.59, -95.09) 01/04/2019   06:07:32  ( -70.62, -96.35)   46.68                71
 01/04/2019   06:58:17   (  70.10,  71.84) 01/04/2019   06:58:08  (  70.11,  71.77)    2.63                 9
 01/04/2019   07:47:47   ( -70.00,-120.67) 01/04/2019   07:48:50  ( -70.00,-120.75)    2.70                63
 01/06/2019   22:25:20   ( -70.17,  20.18) 01/06/2019   22:24:18  ( -70.17,  20.13)    1.65                62
 01/06/2019   23:14:47   (  70.06,-172.34) 01/06/2019   23:15:01  (  70.03,-172.33)    3.55                14
 01/07/2019   00:04:25   ( -69.52,  -5.45) 01/07/2019   00:05:35  ( -69.49,  -4.23)   47.81                70