Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 6 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)
 06/26/2021   06:58:18   ( -70.07,-108.18) 06/26/2021   06:57:42  ( -70.09,-108.18)    2.14                36
 06/26/2021   07:47:45   (  69.97,  59.33) 06/26/2021   07:48:26  (  69.97,  59.31)    0.88                41
 06/28/2021   22:25:14   (  70.38,-159.48) 06/28/2021   22:24:02  (  70.42,-160.25)   29.20                72
 06/28/2021   23:14:48   ( -70.05,   7.68) 06/28/2021   23:14:39  ( -70.06,   7.62)    2.61                 9
 06/29/2021   00:04:15   (  69.95, 175.18) 06/29/2021   00:05:23  (  69.95, 175.11)    2.70                68
 07/01/2021   14:41:49   (  70.08, -44.03) 07/01/2021   14:40:53  (  70.08, -43.96)    2.94                56
 07/01/2021   15:31:19   ( -69.97, 123.44) 07/01/2021   15:31:35  ( -69.99, 123.50)    3.16                16
 07/01/2021   16:20:59   (  69.14, -70.03) 07/01/2021   16:22:06  (  69.18, -68.02)   79.71                67
 07/04/2021   06:58:18   (  70.04,  71.80) 07/04/2021   06:57:49  (  70.06,  71.84)    2.61                29
 07/04/2021   07:47:48   ( -69.94,-120.72) 07/04/2021   07:48:31  ( -69.97,-120.70)    3.15                43
 07/06/2021   22:25:18   ( -70.28,  20.38) 07/06/2021   22:24:05  ( -70.31,  19.91)   17.82                73
 07/06/2021   23:14:47   (  70.06,-172.29) 07/06/2021   23:14:46  (  70.04,-172.37)    3.34                 1
 07/07/2021   00:04:18   ( -69.90,  -4.88) 07/07/2021   00:05:27  ( -69.89,  -4.82)    2.66                69