Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 10 18.  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)
 10/18/2021   22:25:51   (  70.11,-159.90) 10/18/2021   22:24:58  (  70.12,-159.90)    0.31                53
 10/18/2021   23:15:21   ( -69.99,   7.56) 10/18/2021   23:15:40  ( -70.02,   7.56)    2.69                19
 10/19/2021   00:05:03   (  69.07, 173.96) 10/19/2021   00:06:09  (  69.11, 176.20)   88.97                66
 10/21/2021   14:42:21   (  70.07, -44.08) 10/21/2021   14:41:56  (  70.05, -44.04)    3.18                25
 10/21/2021   15:31:51   ( -69.96, 123.39) 10/21/2021   15:32:38  ( -69.95, 123.43)    1.73                47
 10/24/2021   06:09:24   ( -70.13, -95.76) 10/24/2021   06:08:11  ( -70.14, -95.74)    1.89                73
 10/24/2021   06:58:51   (  70.03,  71.73) 10/24/2021   06:58:55  (  70.04,  71.74)    1.00                 4
 10/24/2021   07:48:22   ( -69.86,-120.86) 10/24/2021   07:49:35  ( -69.83,-120.63)    9.54                73
 10/26/2021   22:25:53   ( -70.08,  20.05) 10/26/2021   22:25:08  ( -70.08,  20.12)    2.71                45
 10/26/2021   23:15:20   (  69.97,-172.46) 10/26/2021   23:15:52  (  69.97,-172.41)    1.99                32
 10/29/2021   13:52:44   (  70.62, -30.91) 10/29/2021   13:51:34  (  70.65, -32.34)   52.70                70
 10/29/2021   14:42:22   ( -70.08, 135.93) 10/29/2021   14:42:07  ( -70.07, 135.89)    1.58                15
 10/29/2021   15:31:49   (  69.97, -56.59) 10/29/2021   15:32:51  (  69.97, -56.64)    2.03                62