Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 12 12.  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)
 12/13/2021   22:25:47   ( -70.15,  20.14) 12/13/2021   22:25:13  ( -70.15,  20.11)    0.96                34
 12/13/2021   23:15:14   (  70.04,-172.37) 12/13/2021   23:15:57  (  70.03,-172.39)    1.85                43
 12/16/2021   13:52:41   (  70.51, -31.08) 12/16/2021   13:51:30  (  70.60, -32.12)   39.51                71
 12/16/2021   14:42:17   ( -70.08, 135.91) 12/16/2021   14:42:04  ( -70.09, 135.98)    3.30                13
 12/16/2021   15:31:44   (  69.97, -56.59) 12/16/2021   15:32:48  (  69.97, -56.52)    2.73                64
 12/19/2021   06:09:16   (  70.16,  84.28) 12/19/2021   06:08:14  (  70.17,  84.32)    2.39                62
 12/19/2021   06:58:45   ( -70.11,-108.16) 12/19/2021   06:58:56  ( -70.09,-108.23)    3.39                11
 12/19/2021   07:48:22   (  69.45,  58.57) 12/19/2021   07:49:30  (  69.44,  60.04)   57.28                68
 12/21/2021   22:25:44   (  70.13,-159.88) 12/21/2021   22:25:04  (  70.12,-159.82)    2.59                40
 12/21/2021   23:15:14   ( -70.03,   7.61) 12/21/2021   23:15:46  ( -70.04,   7.63)    1.43                32
 12/24/2021   13:52:34   ( -70.86, 149.44) 12/24/2021   13:51:25  ( -70.92, 147.39)   75.20                69
 12/24/2021   14:42:13   (  70.10, -44.05) 12/24/2021   14:41:56  (  70.13, -44.04)    3.41                17
 12/24/2021   15:31:43   ( -69.99, 123.44) 12/24/2021   15:32:37  ( -69.98, 123.49)    2.43                54