Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2019 1 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)
 01/22/2019   22:25:14   ( -70.17,  20.18) 01/22/2019   22:24:12  ( -70.15,  20.17)    2.44                62
 01/22/2019   23:14:41   (  70.06,-172.33) 01/22/2019   23:14:56  (  70.04,-172.36)    2.75                15
 01/23/2019   00:04:20   ( -69.46,  -5.53) 01/23/2019   00:05:29  ( -69.47,  -4.20)   51.92                69
 01/25/2019   14:41:43   ( -70.14, 136.01) 01/25/2019   14:41:06  ( -70.13, 135.96)    1.72                37
 01/25/2019   15:31:10   (  70.03, -56.50) 01/25/2019   15:31:50  (  70.03, -56.56)    2.17                40
 01/28/2019   06:08:36   (  70.53,  84.83) 01/28/2019   06:07:25  (  70.59,  83.71)   41.96                71
 01/28/2019   06:58:12   ( -70.10,-108.16) 01/28/2019   06:57:59  ( -70.07,-108.16)    3.54                13
 01/28/2019   07:47:39   (  69.99,  59.32) 01/28/2019   07:48:43  (  69.96,  59.31)    2.88                64
 01/30/2019   22:25:10   (  70.16,-159.83) 01/30/2019   22:24:10  (  70.15,-159.83)    0.69                60
 01/30/2019   23:14:40   ( -70.06,   7.66) 01/30/2019   23:14:52  ( -70.05,   7.63)    1.01                12
 01/31/2019   00:04:17   (  69.39, 174.39) 01/31/2019   00:05:25  (  69.36, 175.96)   61.59                68
 02/02/2019   14:41:39   (  70.11, -44.02) 02/02/2019   14:41:03  (  70.09, -43.96)    3.18                36
 02/02/2019   15:31:09   ( -70.01, 123.48) 02/02/2019   15:31:45  ( -69.99, 123.50)    2.71                36