Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 5 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)
 05/14/2020   06:08:06   ( -71.00, -94.53) 05/14/2020   06:06:59  ( -71.06, -97.01)   89.79                67
 05/14/2020   06:57:47   (  70.12,  71.80) 05/14/2020   06:57:27  (  70.11,  71.83)    1.45                20
 05/14/2020   07:47:17   ( -70.03,-120.70) 05/14/2020   07:48:09  ( -70.02,-120.71)    1.01                52
 05/16/2020   22:24:51   ( -70.21,  20.15) 05/16/2020   22:23:38  ( -70.23,  20.11)    2.68                73
 05/16/2020   23:14:18   (  70.09,-172.37) 05/16/2020   23:14:21  (  70.07,-172.33)    2.67                 3
 05/17/2020   00:03:49   ( -69.95,  -4.95) 05/17/2020   00:05:02  ( -69.92,  -4.79)    6.59                73
 05/19/2020   14:41:23   ( -70.17, 135.96) 05/19/2020   14:40:32  ( -70.19, 135.95)    2.52                51
 05/19/2020   15:30:50   (  70.05, -56.57) 05/19/2020   15:31:15  (  70.03, -56.50)    2.96                25
 05/19/2020   16:20:36   ( -69.08, 109.75) 05/19/2020   16:21:41  ( -69.09, 112.19)   97.00                65
 05/22/2020   06:57:55   ( -70.16,-108.19) 05/22/2020   06:57:26  ( -70.15,-108.22)    1.55                29
 05/22/2020   07:47:22   (  70.04,  59.29) 05/22/2020   07:48:10  (  70.05,  59.25)    1.82                48
 05/24/2020   22:24:54   (  70.40,-159.62) 05/24/2020   22:23:42  (  70.49,-160.28)   26.59                72
 05/24/2020   23:14:27   ( -70.14,   7.64) 05/24/2020   23:14:19  ( -70.12,   7.61)    2.89                 8
 05/25/2020   00:03:54   (  70.02, 175.12) 05/25/2020   00:05:03  (  70.02, 175.07)    1.65                69