Simultaneous Nadir Overpasses (SNOs) between METOP-B and NPP
TLE Epoch: 2018 5 6.  Predictions up to the next  14.0 days:

     Date     Time(METOP-B) METOP-B Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/20/2018   11:07:18   ( -73.54,-173.61) 05/20/2018   11:06:11  ( -73.56,-176.50)   90.91                67
 05/20/2018   11:58:02   (  73.29,  -6.83) 05/20/2018   11:56:52  (  73.33,  -8.66)   58.34                70
 05/20/2018   12:48:45   ( -73.27, 160.44) 05/20/2018   12:47:35  ( -73.27, 158.80)   52.55                70
 05/20/2018   13:39:29   (  73.02, -32.77) 05/20/2018   13:38:16  (  73.03, -33.38)   19.77                73
 05/20/2018   14:30:13   ( -72.94, 134.40) 05/20/2018   14:28:59  ( -72.97, 134.07)   11.18                74
 05/20/2018   15:20:53   (  72.89, -58.38) 05/20/2018   15:19:43  (  72.89, -58.44)    2.26                70
 05/20/2018   16:11:36   ( -72.87, 108.90) 05/20/2018   16:10:27  ( -72.88, 108.90)    0.68                69
 05/20/2018   17:02:15   (  72.87, -83.76) 05/20/2018   17:01:13  (  72.89, -83.82)    3.12                62
 05/20/2018   17:52:58   ( -72.85,  83.51) 05/20/2018   17:51:57  ( -72.88,  83.51)    3.78                61
 05/20/2018   18:43:37   (  72.85,-109.15) 05/20/2018   18:42:42  (  72.84,-109.10)    1.60                55
 05/20/2018   19:34:19   ( -72.87,  58.23) 05/20/2018   19:33:27  ( -72.89,  58.13)    3.67                52
 05/20/2018   20:24:58   (  72.87,-134.43) 05/20/2018   20:24:12  (  72.85,-134.49)    3.15                46
 05/20/2018   21:15:41   ( -72.85,  32.84) 05/20/2018   21:14:56  ( -72.84,  32.85)    1.22                45
 05/20/2018   22:06:20   (  72.85,-159.82) 05/20/2018   22:05:42  (  72.85,-159.87)    1.75                38