Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 7 5.  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)
 07/06/2021   22:25:18   ( -70.29,  20.40) 07/06/2021   22:24:06  ( -70.36,  19.83)   22.34                72
 07/06/2021   23:14:48   (  70.03,-172.34) 07/06/2021   23:14:46  (  70.03,-172.35)    0.35                 2
 07/07/2021   00:04:18   ( -69.92,  -4.86) 07/07/2021   00:05:28  ( -69.94,  -4.89)    3.16                70
 07/09/2021   14:41:50   ( -70.09, 135.99) 07/09/2021   14:40:57  ( -70.08, 136.04)    2.18                53
 07/09/2021   15:31:17   (  69.99, -56.51) 07/09/2021   15:31:41  (  69.96, -56.48)    3.28                24
 07/09/2021   16:21:02   ( -69.05, 109.86) 07/09/2021   16:22:08  ( -69.08, 112.12)   90.01                66
 07/12/2021   06:08:35   (  70.98,  85.56) 07/12/2021   06:07:29  (  71.05,  82.92)   95.84                66
 07/12/2021   06:58:20   ( -70.05,-108.19) 07/12/2021   06:57:54  ( -70.06,-108.17)    1.52                26
 07/12/2021   07:47:47   (  69.94,  59.31) 07/12/2021   07:48:38  (  69.95,  59.31)    0.58                51
 07/14/2021   22:25:19   (  70.16,-159.78) 07/14/2021   22:24:09  (  70.14,-159.85)    3.49                70
 07/14/2021   23:14:50   ( -70.00,   7.63) 07/14/2021   23:14:50  ( -69.99,   7.70)    2.70                 0
 07/15/2021   00:04:20   (  69.72, 174.89) 07/15/2021   00:05:31  (  69.72, 175.41)   20.26                71
 07/17/2021   14:41:50   (  70.05, -44.05) 07/17/2021   14:41:05  (  70.07, -43.98)    3.59                45
 07/17/2021   15:31:20   ( -69.95, 123.44) 07/17/2021   15:31:47  ( -69.98, 123.48)    3.23                27