Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 3 15.  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)
 03/16/2021   23:14:42   (  70.11,-172.30) 03/16/2021   23:14:12  (  70.09,-172.35)    2.37                30
 03/17/2021   00:04:12   ( -69.99,  -4.83) 03/17/2021   00:04:53  ( -69.96,  -4.83)    3.35                41
 03/19/2021   14:41:39   ( -70.39, 136.34) 03/19/2021   14:40:27  ( -70.45, 135.56)   30.19                72
 03/19/2021   15:31:10   (  70.06, -56.48) 03/19/2021   15:31:06  (  70.07, -56.54)    2.19                 4
 03/19/2021   16:20:40   ( -69.95, 110.99) 03/19/2021   16:21:47  ( -69.93, 110.98)    1.70                67
 03/22/2021   06:58:11   ( -70.12,-108.16) 03/22/2021   06:57:15  ( -70.11,-108.14)    1.11                56
 03/22/2021   07:47:38   (  70.01,  59.33) 03/22/2021   07:47:59  (  69.99,  59.35)    2.05                21
 03/22/2021   08:37:19   ( -69.24,-134.08) 03/22/2021   08:38:27  ( -69.22,-132.20)   74.17                68
 03/24/2021   23:14:38   ( -70.07,   7.64) 03/24/2021   23:14:08  ( -70.09,   7.67)    3.00                30
 03/25/2021   00:04:05   (  69.95, 175.13) 03/25/2021   00:04:52  (  69.97, 175.16)    2.64                47
 03/27/2021   14:41:34   (  70.22, -43.89) 03/27/2021   14:40:21  (  70.21, -44.06)    6.26                73
 03/27/2021   15:31:05   ( -70.06, 123.52) 03/27/2021   15:31:02  ( -70.07, 123.48)    1.81                 3
 03/27/2021   16:20:33   (  69.89, -69.08) 03/27/2021   16:21:45  (  69.90, -68.96)    4.83                72