Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2017 12 18.  Predictions up to the next  30.0 days:

Date(AQUA)     Time(AQUA)   AQUA Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 12/18/2017   15:12:01   (  14.88, 158.08) 12/18/2017   15:13:21    (  16.27, 155.47)  320.04             80
 12/21/2017   03:31:45   (  22.68, 147.52) 12/21/2017   03:28:15    (  24.87, 145.13)  344.28            210
 12/26/2017   15:59:25   (  22.62, 147.49) 12/26/2017   16:02:03    (  23.30, 144.50)  315.50            158
 01/03/2018   15:10:02   (  22.63, 159.85) 01/03/2018   15:11:15    (  23.23, 157.18)  281.76             73
 01/06/2018   03:31:53   (  22.64, 147.52) 01/06/2018   03:28:24    (  25.87, 144.89)  446.71            209
 01/11/2018   15:59:31   (  22.62, 147.49) 01/11/2018   16:01:54    (  23.30, 144.52)  313.41            143