Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2020 4 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)
 04/20/2020   06:57:58   ( -70.14,-108.19) 04/20/2020   06:57:29  ( -70.16,-108.25)    2.49                29
 04/20/2020   07:47:25   (  70.03,  59.30) 04/20/2020   07:48:13  (  70.04,  59.24)    2.33                48
 04/22/2020   22:24:56   (  70.24,-159.81) 04/22/2020   22:23:43  (  70.29,-160.00)    9.10                73
 04/22/2020   23:14:27   ( -70.08,   7.60) 04/22/2020   23:14:23  ( -70.09,   7.63)    1.49                 4
 04/23/2020   00:03:54   (  69.96, 175.08) 04/23/2020   00:05:07  (  69.98, 175.11)    1.79                73
 04/25/2020   14:41:24   (  70.17, -44.03) 04/25/2020   14:40:35  (  70.18, -44.05)    1.16                49
 04/25/2020   15:30:54   ( -70.07, 123.46) 04/25/2020   15:31:17  ( -70.08, 123.42)    1.89                23
 04/28/2020   06:57:52   (  70.15,  71.82) 04/28/2020   06:57:29  (  70.12,  71.81)    3.56                23
 04/28/2020   07:47:23   ( -70.00,-120.76) 04/28/2020   07:48:11  ( -70.02,-120.72)    2.51                48
 04/30/2020   22:24:54   ( -70.20,  20.12) 04/30/2020   22:23:40  ( -70.21,  20.13)    1.80                74
 04/30/2020   23:14:20   (  70.13,-172.33) 04/30/2020   23:14:24  (  70.11,-172.41)    3.31                 4
 05/01/2020   00:03:52   ( -69.93,  -4.99) 05/01/2020   00:05:05  ( -69.96,  -4.85)    6.11                73