Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 7 24.  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)
 07/25/2021   14:41:57   ( -70.07, 135.96) 07/25/2021   14:41:09  ( -70.07, 136.02)    2.15                48
 07/25/2021   15:31:24   (  69.97, -56.54) 07/25/2021   15:31:53  (  69.95, -56.48)    3.21                29
 07/28/2021   06:08:45   (  70.81,  85.29) 07/28/2021   06:07:37  (  70.89,  83.16)   78.29                68
 07/28/2021   06:58:27   ( -70.04,-108.20) 07/28/2021   06:58:05  ( -70.07,-108.21)    2.97                22
 07/28/2021   07:47:54   (  69.93,  59.29) 07/28/2021   07:48:49  (  69.94,  59.29)    1.14                55
 07/30/2021   22:25:28   (  70.11,-159.86) 07/30/2021   22:24:19  (  70.10,-159.81)    2.17                69
 07/30/2021   23:14:58   ( -70.01,   7.63) 07/30/2021   23:15:01  ( -70.01,   7.64)    0.61                 3
 07/31/2021   00:04:29   (  69.68, 174.81) 07/31/2021   00:05:40  (  69.63, 175.52)   28.11                71
 08/02/2021   14:41:59   (  70.07, -44.04) 08/02/2021   14:41:15  (  70.05, -43.97)    3.59                44
 08/02/2021   15:31:29   ( -69.97, 123.45) 08/02/2021   15:31:57  ( -69.96, 123.49)    1.79                28
 08/05/2021   06:08:50   ( -70.85, -94.65) 08/05/2021   06:07:42  ( -70.90, -96.87)   80.83                68
 08/05/2021   06:58:29   (  70.07,  71.85) 08/05/2021   06:58:12  (  70.05,  71.80)    3.35                17
 08/05/2021   07:48:00   ( -69.92,-120.73) 08/05/2021   07:48:53  ( -69.91,-120.67)    3.27                53