Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 11 6.  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)
 11/06/2021   13:52:51   ( -70.23, 148.50) 11/06/2021   13:51:37  ( -70.29, 148.21)   12.64                74
 11/06/2021   14:42:19   (  70.08, -44.07) 11/06/2021   14:42:19  (  70.06, -44.13)    2.83                 0
 11/06/2021   15:31:49   ( -69.96, 123.40) 11/06/2021   15:33:01  ( -69.97, 123.32)    3.11                72
 11/09/2021   06:09:21   ( -70.14, -95.75) 11/09/2021   06:08:33  ( -70.14, -95.80)    1.66                48
 11/09/2021   06:58:48   (  70.03,  71.75) 11/09/2021   06:59:17  (  70.02,  71.70)    2.49                29
 11/11/2021   21:36:10   (  70.74,-146.61) 11/11/2021   21:35:01  (  70.82,-148.44)   67.57                69
 11/11/2021   22:25:50   ( -70.09,  20.06) 11/11/2021   22:25:31  ( -70.10,  20.03)    1.58                19
 11/11/2021   23:15:17   (  69.98,-172.45) 11/11/2021   23:16:15  (  69.98,-172.48)    1.16                58
 11/14/2021   13:52:49   (  70.13, -31.63) 11/14/2021   13:51:47  (  70.15, -31.61)    2.37                62
 11/14/2021   14:42:19   ( -70.02, 135.86) 11/14/2021   14:42:28  ( -70.00, 135.93)    3.60                 9
 11/14/2021   15:31:55   (  69.41, -57.33) 11/14/2021   15:33:04  (  69.46, -55.96)   54.05                69
 11/17/2021   06:09:16   (  70.11,  84.23) 11/17/2021   06:08:44  (  70.12,  84.21)    1.18                32
 11/17/2021   06:58:46   ( -70.01,-108.28) 11/17/2021   06:59:26  ( -70.02,-108.33)    2.51                40
 11/19/2021   21:36:14   ( -70.36,  32.84) 11/19/2021   21:35:02  ( -70.41,  32.20)   24.29                72
 11/19/2021   22:25:44   (  70.08,-159.92) 11/19/2021   22:25:42  (  70.08,-159.98)    2.35                 2
 11/19/2021   23:15:15   ( -69.93,   7.49) 11/19/2021   23:16:23  ( -69.94,   7.56)    2.80                68