Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 4 1.  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)
 04/01/2020   14:41:36   ( -70.17, 135.99) 04/01/2020   14:40:33  ( -70.17, 135.97)    1.00                63
 04/01/2020   15:31:03   (  70.06, -56.51) 04/01/2020   15:31:17  (  70.04, -56.53)    2.66                14
 04/01/2020   16:20:41   ( -69.51, 110.36) 04/01/2020   16:21:51  ( -69.54, 111.54)   45.77                70
 04/04/2020   06:58:04   ( -70.14,-108.18) 04/04/2020   06:57:28  ( -70.14,-108.21)    1.48                36
 04/04/2020   07:47:31   (  70.02,  59.31) 04/04/2020   07:48:12  (  70.02,  59.28)    1.48                41
 04/06/2020   22:24:58   (  70.42,-159.52) 04/06/2020   22:23:46  (  70.47,-160.28)   28.61                72
 04/06/2020   23:14:32   ( -70.10,   7.65) 04/06/2020   23:14:23  ( -70.11,   7.59)    2.85                 9
 04/07/2020   00:03:59   (  69.98, 175.13) 04/07/2020   00:05:07  (  70.00, 175.08)    2.60                68
 04/09/2020   14:41:29   (  70.15, -44.03) 04/09/2020   14:40:34  (  70.13, -43.98)    2.77                55
 04/09/2020   15:30:59   ( -70.05, 123.47) 04/09/2020   15:31:16  ( -70.04, 123.48)    1.50                17
 04/09/2020   16:20:40   (  69.16, -70.10) 04/09/2020   16:21:46  (  69.18, -67.96)   84.52                66
 04/12/2020   06:57:57   (  70.10,  71.78) 04/12/2020   06:57:29  (  70.12,  71.81)    2.14                28
 04/12/2020   07:47:27   ( -70.00,-120.72) 04/12/2020   07:48:11  ( -70.02,-120.72)    1.79                44
 04/14/2020   22:24:56   ( -70.28,  20.27) 04/14/2020   22:23:43  ( -70.37,  19.89)   17.41                73
 04/14/2020   23:14:24   (  70.10,-172.34) 04/14/2020   23:14:24  (  70.10,-172.40)    2.29                 0
 04/15/2020   00:03:55   ( -69.95,  -4.91) 04/15/2020   00:05:05  ( -69.95,  -4.85)    2.58                70