Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2020 12 17.  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)
 12/17/2020   18:26:55   (  46.52, 115.89) 12/17/2020   18:27:04  (  46.54, 115.80)    7.80                 9
 12/17/2020   19:15:15   ( -54.95, -72.87) 12/17/2020   19:14:11  ( -54.94, -72.89)    1.68                64
 12/20/2020   10:43:09   (  46.95,-128.01) 12/20/2020   10:43:25  (  46.96,-128.16)   11.50                16
 12/20/2020   11:32:04   ( -53.37,  42.22) 12/20/2020   11:31:06  ( -53.37,  42.21)    0.80                58
 12/23/2020   02:59:22   (  47.37, -11.91) 12/23/2020   02:59:45  (  47.38, -12.11)   15.33                23
 12/23/2020   03:48:50   ( -51.90, 157.41) 12/23/2020   03:47:58  ( -51.90, 157.41)    0.49                52
 12/25/2020   19:15:38   (  47.67, 104.14) 12/25/2020   19:16:07  (  47.72, 103.91)   18.44                29
 12/25/2020   20:05:34   ( -50.61, -87.27) 12/25/2020   20:04:48  ( -50.60, -87.28)    0.73                46
 12/28/2020   11:31:52   (  48.09,-139.76) 12/28/2020   11:32:28  (  48.12,-140.05)   21.99                36
 12/28/2020   12:22:15   ( -49.47,  28.14) 12/28/2020   12:21:35  ( -49.47,  28.12)    1.51                40