Simultaneous Nadir Overpasses (SNOs) between AQUA and NPP over region 
TLE Epoch: 2017 12 20.  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)
 12/21/2017   03:31:45   (  22.65, 147.53) 12/21/2017   03:28:16    (  24.90, 145.13)  349.94            209
 12/26/2017   15:59:25   (  22.59, 147.49) 12/26/2017   16:02:03    (  23.28, 144.50)  315.68            158
 01/03/2018   15:10:01   (  22.63, 159.86) 01/03/2018   15:11:14    (  23.25, 157.19)  281.90             73
 01/06/2018   03:31:52   (  22.64, 147.53) 01/06/2018   03:28:23    (  25.84, 144.90)  444.40            209
 01/11/2018   15:59:30   (  22.60, 147.49) 01/11/2018   16:01:54    (  23.25, 144.51)  313.82            144