Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 1 25.  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)
 01/25/2021   06:58:31   (  70.12,  71.87) 01/25/2021   06:57:23  (  70.12,  71.84)    0.91                68
 01/25/2021   07:48:01   ( -70.00,-120.67) 01/25/2021   07:48:05  ( -70.02,-120.69)    2.47                 4
 01/25/2021   08:37:33   (  69.63,  46.46) 01/25/2021   08:38:44  (  69.65,  47.17)   27.72                71
 01/27/2021   23:15:01   (  70.06,-172.34) 01/27/2021   23:14:17  (  70.05,-172.29)    2.23                44
 01/28/2021   00:04:31   ( -69.95,  -4.87) 01/28/2021   00:04:59  ( -69.95,  -4.82)    2.00                28
 01/30/2021   14:41:50   ( -70.86, 137.08) 01/30/2021   14:40:42  ( -70.88, 134.86)   80.91                68
 01/30/2021   15:31:30   (  70.05, -56.48) 01/30/2021   15:31:12  (  70.04, -56.50)    1.35                18
 01/30/2021   16:21:00   ( -69.94, 111.00) 01/30/2021   16:21:54  ( -69.94, 110.97)    1.13                54
 02/02/2021   06:58:32   ( -70.15,-108.11) 02/02/2021   06:57:23  ( -70.13,-108.18)    2.91                69
 02/02/2021   07:48:00   (  69.98,  59.30) 02/02/2021   07:48:06  (  69.98,  59.37)    2.33                 6
 02/02/2021   08:37:33   ( -69.71,-133.44) 02/02/2021   08:38:45  ( -69.72,-132.93)   19.84                72
 02/04/2021   23:15:01   ( -70.07,   7.67) 02/04/2021   23:14:16  ( -70.07,   7.69)    0.85                45
 02/05/2021   00:04:28   (  69.96, 175.16) 02/05/2021   00:05:00  (  69.97, 175.15)    0.95                32
 02/07/2021   14:41:49   (  70.76, -43.08) 02/07/2021   14:40:41  (  70.80, -45.02)   71.42                68
 02/07/2021   15:31:30   ( -70.05, 123.52) 02/07/2021   15:31:11  ( -70.06, 123.47)    2.13                19
 02/07/2021   16:20:57   (  69.94, -68.99) 02/07/2021   16:21:54  (  69.91, -69.00)    3.14                57