Simultaneous Nadir Overpasses (SNOs) between METOP-A and NPP
TLE Epoch: 2018 4 6.  Predictions up to the next  14.0 days:

     Date     Time(METOP-A) METOP-A Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/20/2018   07:57:02   (  73.83,  52.86) 04/20/2018   07:55:54  (  73.80,  50.51)   72.92                68
 04/20/2018   08:47:47   ( -73.70,-140.12) 04/20/2018   08:46:37  ( -73.73,-142.00)   58.82                70
 04/20/2018   09:38:30   (  73.50,  26.77) 04/20/2018   09:37:18  (  73.51,  25.83)   29.78                72
 04/20/2018   10:29:14   ( -73.42,-166.09) 04/20/2018   10:28:01  ( -73.44,-166.70)   19.38                73
 04/20/2018   11:19:56   (  73.27,   0.92) 04/20/2018   11:18:43  (  73.27,   1.01)    2.87                73
 04/20/2018   12:10:38   ( -73.29, 168.29) 04/20/2018   12:09:28  ( -73.29, 168.26)    1.10                70
 04/20/2018   13:01:17   (  73.30, -24.37) 04/20/2018   13:00:13  (  73.27, -24.38)    3.14                64
 04/20/2018   13:52:00   ( -73.27, 142.89) 04/20/2018   13:50:58  ( -73.30, 142.87)    3.45                62
 04/20/2018   14:42:39   (  73.27, -49.76) 04/20/2018   14:41:43  (  73.27, -49.76)    0.30                56
 04/20/2018   15:33:22   ( -73.24, 117.50) 04/20/2018   15:32:27  ( -73.25, 117.60)    3.51                55
 04/20/2018   16:24:00   (  73.30, -75.05) 04/20/2018   16:23:13  (  73.28, -75.15)    3.63                47
 04/20/2018   17:14:43   ( -73.27,  92.21) 04/20/2018   17:13:57  ( -73.26,  92.22)    1.02                46
 04/20/2018   18:05:22   (  73.27,-100.45) 04/20/2018   18:04:43  (  73.28,-100.53)    3.06                39
 04/20/2018   18:56:05   ( -73.24,  66.81) 04/20/2018   18:55:27  ( -73.26,  66.83)    2.46                38
 04/20/2018   19:46:44   (  73.24,-125.84) 04/20/2018   19:46:12  (  73.24,-125.80)    1.48                32
 04/20/2018   20:37:26   ( -73.26,  41.53) 04/20/2018   20:36:57  ( -73.27,  41.45)    2.50                29
 04/20/2018   21:28:06   (  73.22,-151.24) 04/20/2018   21:27:42  (  73.24,-151.19)    3.26                24