Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 1 15.  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   ( -47.10, 118.64) 01/16/2021   06:17:40  ( -47.18, 118.36)   23.02                19
 01/16/2021   07:07:43   (  48.25, -73.56) 01/16/2021   07:06:45  (  48.25, -73.57)    0.95                58
 01/18/2021   22:33:34   ( -47.56,-125.24) 01/18/2021   22:34:01  ( -47.62,-125.59)   26.62                27
 01/18/2021   23:24:23   (  47.15,  41.91) 01/18/2021   23:23:32  (  47.14,  41.88)    2.37                51
 01/21/2021   14:49:47   ( -48.01,  -9.13) 01/21/2021   14:50:21  ( -48.11,  -9.51)   30.44                34
 01/21/2021   15:41:02   (  46.10, 157.42) 01/21/2021   15:40:18  (  46.09, 157.37)    4.09                44
 01/24/2021   07:05:59   ( -48.46, 106.99) 01/24/2021   07:06:41  ( -48.53, 106.54)   33.95                42
 01/24/2021   07:57:23   (  46.03, -86.68) 01/24/2021   07:56:46  (  46.04, -86.76)    6.65                37
 01/26/2021   23:22:13   ( -48.86,-136.91) 01/26/2021   23:23:02  ( -48.95,-137.40)   37.38                49
 01/27/2021   00:13:44   (  46.01,  29.24) 01/27/2021   00:13:14  (  46.04,  29.12)    9.85                30