Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 4 15.  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)
 04/17/2020   14:41:30   ( -70.16, 135.96) 04/17/2020   14:40:34  ( -70.16, 135.98)    0.79                56
 04/17/2020   15:30:57   (  70.05, -56.56) 04/17/2020   15:31:18  (  70.04, -56.54)    0.91                21
 04/17/2020   16:20:39   ( -69.28, 110.04) 04/17/2020   16:21:47  ( -69.27, 111.92)   74.22                68
 04/20/2020   06:57:58   ( -70.15,-108.17) 04/20/2020   06:57:29  ( -70.15,-108.23)    2.25                29
 04/20/2020   07:47:25   (  70.04,  59.31) 04/20/2020   07:48:13  (  70.03,  59.25)    2.17                48
 04/22/2020   22:24:56   (  70.24,-159.80) 04/22/2020   22:23:43  (  70.28,-159.99)    8.47                73
 04/22/2020   23:14:27   ( -70.09,   7.61) 04/22/2020   23:14:23  ( -70.08,   7.64)    1.38                 4
 04/23/2020   00:03:54   (  69.97, 175.09) 04/23/2020   00:05:07  (  69.97, 175.11)    1.11                73
 04/25/2020   14:41:24   (  70.17, -44.03) 04/25/2020   14:40:35  (  70.17, -44.05)    0.79                49
 04/25/2020   15:30:54   ( -70.07, 123.47) 04/25/2020   15:31:17  ( -70.07, 123.43)    1.57                23
 04/28/2020   06:57:52   (  70.15,  71.82) 04/28/2020   06:57:29  (  70.12,  71.81)    3.30                23
 04/28/2020   07:47:23   ( -70.00,-120.76) 04/28/2020   07:48:11  ( -70.01,-120.71)    2.37                48