Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 6 28.  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)
 06/28/2021   22:25:14   (  70.37,-159.49) 06/28/2021   22:24:02  (  70.43,-160.26)   29.64                72
 06/28/2021   23:14:48   ( -70.04,   7.66) 06/28/2021   23:14:38  ( -70.02,   7.69)    1.68                10
 06/29/2021   00:04:15   (  69.94, 175.17) 06/29/2021   00:05:23  (  69.96, 175.09)    3.52                68
 07/01/2021   14:41:48   (  70.12, -43.97) 07/01/2021   14:40:53  (  70.10, -43.98)    3.06                55
 07/01/2021   15:31:18   ( -70.01, 123.50) 07/01/2021   15:31:35  ( -70.01, 123.48)    1.16                17
 07/01/2021   16:20:59   (  69.14, -70.04) 07/01/2021   16:22:05  (  69.14, -67.96)   82.34                66
 07/04/2021   06:58:18   (  70.09,  71.87) 07/04/2021   06:57:50  (  70.08,  71.81)    2.34                28
 07/04/2021   07:47:47   ( -69.98,-120.66) 07/04/2021   07:48:31  ( -69.99,-120.73)    3.01                44
 07/06/2021   22:25:18   ( -70.27,  20.36) 07/06/2021   22:24:05  ( -70.34,  19.86)   20.38                73
 07/06/2021   23:14:48   (  70.00,-172.38) 07/06/2021   23:14:45  (  70.02,-172.33)    3.35                 3
 07/07/2021   00:04:17   ( -69.95,  -4.82) 07/07/2021   00:05:27  ( -69.92,  -4.87)    2.96                70
 07/09/2021   14:41:50   ( -70.12, 136.03) 07/09/2021   14:40:58  ( -70.12, 135.97)    2.36                52
 07/09/2021   15:31:17   (  70.01, -56.48) 07/09/2021   15:31:42  (  70.01, -56.56)    2.78                25