Simultaneous Nadir Overpasses (SNOs) near US between AQUA and NPP
TLE Epoch: 2018 3 20.  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)
 03/21/2018   19:07:09   (  49.96, -92.54) 03/21/2018   19:00:53    (  49.61, -94.34)  134.89            376
 03/21/2018   20:46:02   (  49.95,-117.26) 03/21/2018   20:42:22    (  49.56,-119.70)  180.20            220
 03/27/2018   07:19:33   (  49.89, -76.00) 03/27/2018   07:19:55    (  50.29, -78.16)  160.32             22
 03/27/2018   08:58:26   (  49.89,-100.72) 03/27/2018   09:01:22    (  50.46,-103.46)  204.84            176
 03/29/2018   18:17:42   (  49.99, -80.20) 03/29/2018   18:10:13    (  49.75, -81.73)  113.27            449
 03/29/2018   19:56:35   (  49.99,-104.92) 03/29/2018   19:51:41    (  49.64,-107.06)  158.48            294
 03/29/2018   21:31:44   (  36.64,-124.98) 03/29/2018   21:29:18    (  36.14,-127.51)  232.73            146