Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 12 19.  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)
 12/19/2021   06:09:15   (  70.17,  84.29) 12/19/2021   06:08:13  (  70.16,  84.34)    2.19                62
 12/19/2021   06:58:45   ( -70.06,-108.23) 12/19/2021   06:58:55  ( -70.08,-108.22)    3.05                10
 12/19/2021   07:48:21   (  69.46,  58.58) 12/19/2021   07:49:30  (  69.48,  59.98)   54.47                69
 12/21/2021   22:25:44   (  70.13,-159.88) 12/21/2021   22:25:05  (  70.16,-159.88)    3.67                39
 12/21/2021   23:15:14   ( -70.02,   7.59) 12/21/2021   23:15:46  ( -70.03,   7.64)    2.07                32
 12/24/2021   13:52:34   ( -70.85, 149.42) 12/24/2021   13:51:25  ( -70.92, 147.39)   74.34                69
 12/24/2021   14:42:12   (  70.14, -43.99) 12/24/2021   14:41:56  (  70.12, -44.03)    2.76                16
 12/24/2021   15:31:42   ( -70.03, 123.49) 12/24/2021   15:32:38  ( -70.03, 123.41)    2.96                56
 12/27/2021   06:09:14   ( -70.19, -95.67) 12/27/2021   06:08:03  ( -70.19, -95.67)    0.60                71
 12/27/2021   06:58:41   (  70.08,  71.81) 12/27/2021   06:58:47  (  70.07,  71.82)    0.90                 6
 12/27/2021   07:48:13   ( -69.81,-120.93) 12/27/2021   07:49:25  ( -69.83,-120.50)   16.83                72
 12/29/2021   22:25:42   ( -70.13,  20.12) 12/29/2021   22:24:53  ( -70.14,  20.18)    2.75                49
 12/29/2021   23:15:09   (  70.02,-172.39) 12/29/2021   23:15:37  (  70.03,-172.34)    2.72                28
 01/01/2022   13:52:25   (  71.04, -30.27) 01/01/2022   13:51:19  (  71.09, -32.88)   94.32                66
 01/01/2022   14:42:10   ( -70.11, 135.98) 01/01/2022   14:41:44  ( -70.10, 136.03)    2.36                26
 01/01/2022   15:31:37   (  70.00, -56.54) 01/01/2022   15:32:28  (  69.99, -56.50)    1.54                51