Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 1 3.  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)
 01/03/2021   23:15:09   ( -70.09,   7.70) 01/03/2021   23:14:14  ( -70.07,   7.72)    2.43                55
 01/04/2021   00:04:36   (  69.99, 175.20) 01/04/2021   00:04:59  (  70.01, 175.12)    3.57                23
 01/04/2021   00:54:19   ( -69.16, -18.29) 01/04/2021   00:55:26  ( -69.12, -16.27)   79.92                67
 01/06/2021   15:31:38   ( -70.04, 123.50) 01/06/2021   15:31:09  ( -70.04, 123.54)    1.38                29
 01/06/2021   16:21:05   (  69.93, -69.00) 01/06/2021   16:21:53  (  69.93, -68.98)    1.05                48
 01/09/2021   06:58:36   (  70.14,  71.90) 01/09/2021   06:57:23  (  70.16,  71.81)    3.83                73
 01/09/2021   07:48:06   ( -70.03,-120.62) 01/09/2021   07:48:04  ( -70.00,-120.64)    3.44                 2
 01/09/2021   08:37:34   (  69.87,  46.79) 01/09/2021   08:38:47  (  69.84,  46.91)    5.17                73
 01/11/2021   23:15:05   (  70.07,-172.31) 01/11/2021   23:14:17  (  70.08,-172.30)    0.56                48
 01/12/2021   00:04:35   ( -69.97,  -4.83) 01/12/2021   00:04:59  ( -69.98,  -4.83)    0.67                24
 01/14/2021   14:41:50   ( -70.99, 137.28) 01/14/2021   14:40:44  ( -71.04, 134.60)   97.31                66
 01/14/2021   15:31:32   (  70.06, -56.46) 01/14/2021   15:31:11  (  70.06, -56.50)    1.76                21
 01/14/2021   16:21:02   ( -69.95, 111.03) 01/14/2021   16:21:53  ( -69.95, 110.98)    2.23                51