Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 6 16.  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)
 06/17/2020   22:24:52   ( -70.93,  21.36) 06/17/2020   22:23:45  ( -71.01,  18.91)   89.41                67
 06/17/2020   23:14:33   (  70.07,-172.28) 06/17/2020   23:14:13  (  70.06,-172.25)    1.68                20
 06/18/2020   00:04:03   ( -69.96,  -4.81) 06/18/2020   00:04:55  ( -69.97,  -4.80)    1.40                52
 06/20/2020   14:41:36   ( -70.20, 136.14) 06/20/2020   14:40:24  ( -70.21, 135.98)    6.08                72
 06/20/2020   15:31:04   (  70.04, -56.44) 06/20/2020   15:31:07  (  70.04, -56.45)    0.65                 3
 06/20/2020   16:20:35   ( -69.88, 110.97) 06/20/2020   16:21:48  ( -69.90, 111.08)    4.83                73
 06/23/2020   06:58:07   ( -70.12,-108.09) 06/23/2020   06:57:16  ( -70.14,-108.13)    2.09                51
 06/23/2020   07:47:34   (  70.02,  59.40) 06/23/2020   07:48:00  (  70.02,  59.35)    2.10                26
 06/23/2020   08:37:20   ( -69.03,-134.30) 06/23/2020   08:38:26  ( -69.09,-131.97)   92.77                66
 06/25/2020   23:14:38   ( -70.10,   7.75) 06/25/2020   23:14:09  ( -70.07,   7.75)    3.15                29
 06/26/2020   00:04:05   (  69.99, 175.24) 06/26/2020   00:04:53  (  69.96, 175.23)    3.30                48
 06/28/2020   14:41:37   (  70.28, -43.75) 06/28/2020   14:40:24  (  70.31, -44.16)   15.76                73
 06/28/2020   15:31:09   ( -70.06, 123.58) 06/28/2020   15:31:03  ( -70.05, 123.55)    1.79                 6
 06/28/2020   16:20:36   (  69.95, -68.93) 06/28/2020   16:21:47  (  69.94, -68.97)    1.94                71