Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 1 21.  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)
 01/22/2019   22:25:15   ( -70.14,  20.14) 01/22/2019   22:24:12  ( -70.12,  20.21)    3.32                63
 01/22/2019   23:14:42   (  70.03,-172.37) 01/22/2019   23:14:56  (  70.01,-172.31)    3.16                14
 01/23/2019   00:04:20   ( -69.49,  -5.49) 01/23/2019   00:05:30  ( -69.50,  -4.23)   49.05                70
 01/25/2019   14:41:43   ( -70.10, 135.96) 01/25/2019   14:41:05  ( -70.11, 136.00)    1.61                38
 01/25/2019   15:31:10   (  69.99, -56.55) 01/25/2019   15:31:49  (  70.00, -56.52)    1.25                39
 01/28/2019   06:08:35   (  70.55,  84.86) 01/28/2019   06:07:25  (  70.61,  83.67)   44.63                70
 01/28/2019   06:58:12   ( -70.06,-108.21) 01/28/2019   06:57:59  ( -70.09,-108.20)    3.42                13
 01/28/2019   07:47:38   (  70.00,  59.35) 01/28/2019   07:48:43  (  69.99,  59.27)    3.59                65
 01/30/2019   22:25:10   (  70.17,-159.81) 01/30/2019   22:24:11  (  70.18,-159.87)    2.60                59
 01/30/2019   23:14:41   ( -70.02,   7.60) 01/30/2019   23:14:52  ( -70.03,   7.67)    2.87                11
 01/31/2019   00:04:17   (  69.41, 174.41) 01/31/2019   00:05:26  (  69.39, 175.92)   59.17                69
 02/02/2019   14:41:39   (  70.12, -44.00) 02/02/2019   14:41:04  (  70.12, -44.00)    1.00                35
 02/02/2019   15:31:09   ( -70.02, 123.49) 02/02/2019   15:31:46  ( -70.02, 123.46)    1.37                37