Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 12 29.  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)
 12/29/2020   15:31:40   (  70.02, -56.52) 12/29/2020   15:31:09  (  70.04, -56.45)    2.97                31
 12/29/2020   16:21:09   ( -69.97, 111.03) 12/29/2020   16:21:51  ( -69.95, 111.00)    2.29                42
 01/01/2021   06:58:37   ( -70.36,-107.80) 01/01/2021   06:57:25  ( -70.38,-108.52)   26.94                72
 01/01/2021   07:48:08   (  70.03,  59.38) 01/01/2021   07:48:04  (  70.00,  59.37)    3.55                 4
 01/01/2021   08:37:38   ( -69.92,-133.14) 01/01/2021   08:38:46  ( -69.91,-133.17)    1.93                68
 01/03/2021   23:15:10   ( -70.09,   7.70) 01/03/2021   23:14:15  ( -70.08,   7.71)    1.63                55
 01/04/2021   00:04:37   (  69.98, 175.19) 01/04/2021   00:04:59  (  69.97, 175.19)    1.51                22
 01/04/2021   00:54:20   ( -69.16, -18.29) 01/04/2021   00:55:27  ( -69.13, -16.28)   79.76                67
 01/06/2021   15:31:38   ( -70.04, 123.50) 01/06/2021   15:31:09  ( -70.04, 123.53)    1.43                29
 01/06/2021   16:21:05   (  69.92, -69.01) 01/06/2021   16:21:53  (  69.94, -69.00)    1.58                48
 01/09/2021   06:58:36   (  70.13,  71.89) 01/09/2021   06:57:23  (  70.17,  71.79)    5.23                73
 01/09/2021   07:48:06   ( -70.03,-120.62) 01/09/2021   07:48:04  ( -70.01,-120.65)    2.48                 2
 01/09/2021   08:37:34   (  69.86,  46.78) 01/09/2021   08:38:47  (  69.85,  46.89)    4.31                73
 01/11/2021   23:15:05   (  70.06,-172.33) 01/11/2021   23:14:17  (  70.09,-172.32)    2.72                48
 01/12/2021   00:04:35   ( -69.96,  -4.84) 01/12/2021   00:04:59  ( -69.98,  -4.84)    1.80                24