Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 12 22.  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)
 12/24/2020   06:58:37   (  70.38,  72.24) 12/24/2020   06:57:25  (  70.42,  71.42)   30.77                72
 12/24/2020   07:48:12   ( -70.00,-120.68) 12/24/2020   07:48:01  ( -70.02,-120.63)    2.86                11
 12/24/2020   08:37:39   (  69.89,  46.81) 12/24/2020   08:38:45  (  69.90,  46.85)    1.70                66
 12/26/2020   23:15:11   (  70.07,-172.33) 12/26/2020   23:14:14  (  70.06,-172.26)    2.85                57
 12/27/2020   00:04:41   ( -69.97,  -4.84) 12/27/2020   00:04:56  ( -69.97,  -4.80)    1.75                15
 12/27/2020   00:54:20   (  69.19, 161.76) 12/27/2020   00:55:27  (  69.17, 163.68)   76.16                67
 12/29/2020   15:31:40   (  70.03, -56.50) 12/29/2020   15:31:09  (  70.03, -56.43)    2.80                31
 12/29/2020   16:21:10   ( -69.93, 110.99) 12/29/2020   16:21:51  ( -69.93, 111.03)    1.63                41
 01/01/2021   06:58:38   ( -70.32,-107.85) 01/01/2021   06:57:26  ( -70.41,-108.57)   28.71                72
 01/01/2021   07:48:09   (  69.99,  59.32) 01/01/2021   07:48:04  (  69.99,  59.39)    2.70                 5
 01/01/2021   08:37:39   ( -69.89,-133.19) 01/01/2021   08:38:46  ( -69.89,-133.14)    1.76                67
 01/03/2021   23:15:09   ( -70.11,   7.73) 01/03/2021   23:14:15  ( -70.11,   7.66)    2.56                54
 01/04/2021   00:04:37   (  69.94, 175.13) 01/04/2021   00:04:58  (  69.95, 175.21)    3.31                21