Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 1 14.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(AQUA) AQUA Lat/Lon    Distance(km)  Time Diff(sec)
 01/16/2021   06:17:21   ( -47.12, 118.65) 01/16/2021   06:17:40  ( -47.20, 118.36)   23.03                19
 01/16/2021   07:07:43   (  48.27, -73.55) 01/16/2021   07:06:45  (  48.26, -73.56)    0.95                58
 01/18/2021   22:33:34   ( -47.57,-125.24) 01/18/2021   22:34:01  ( -47.63,-125.58)   26.61                27
 01/18/2021   23:24:43   (  46.01,  41.45) 01/18/2021   23:23:51  (  46.03,  41.46)    2.34                52
 01/21/2021   14:49:47   ( -47.97,  -9.14) 01/21/2021   14:50:21  ( -48.06,  -9.53)   30.36                34
 01/21/2021   15:41:01   (  46.11, 157.42) 01/21/2021   15:40:17  (  46.10, 157.37)    4.05                44
 01/24/2021   07:06:00   ( -48.42, 106.97) 01/24/2021   07:06:42  ( -48.49, 106.53)   33.89                42
 01/24/2021   07:57:23   (  46.04, -86.67) 01/24/2021   07:56:46  (  46.05, -86.76)    6.65                37
 01/26/2021   23:22:13   ( -48.87,-136.91) 01/26/2021   23:23:02  ( -48.96,-137.40)   37.39                49
 01/27/2021   00:13:44   (  46.03,  29.25) 01/27/2021   00:13:14  (  46.06,  29.13)    9.87                30