Simultaneous Nadir Overpasses (SNOs) near US between AQUA and NPP
TLE Epoch: 2018 4 21.  Predictions up to the next  10.0 days:

Date(AQUA)     Time(AQUA)   AQUA Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 04/22/2018   19:07:10   (  49.97, -92.56) 04/22/2018   19:01:03    (  49.64, -94.39)  136.51            367
 04/22/2018   20:46:03   (  49.97,-117.28) 04/22/2018   20:42:31    (  49.53,-119.72)  181.81            212
 04/28/2018   07:19:29   (  49.89, -76.03) 04/28/2018   07:20:03    (  50.32, -78.16)  159.83             34
 04/28/2018   08:58:22   (  49.89,-100.75) 04/28/2018   09:01:31    (  50.43,-103.49)  204.34            189
 04/30/2018   18:17:35   (  49.94, -80.17) 04/30/2018   18:10:19    (  49.64, -81.71)  115.49            436
 04/30/2018   19:56:28   (  49.94,-104.89) 04/30/2018   19:51:48    (  49.59,-107.06)  160.77            280
 04/30/2018   21:31:38   (  36.65,-124.99) 04/30/2018   21:29:26    (  36.16,-127.54)  234.85            132