Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2020 12 10.  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)
 12/12/2020   09:54:22   (  46.01,-116.16) 12/12/2020   09:54:17  (  46.02,-116.16)    1.51                 5
 12/12/2020   10:39:34   ( -64.99,  62.59) 12/12/2020   10:38:20  ( -65.06,  62.25)   18.29                74
 12/15/2020   02:10:40   (  46.15,  -0.18) 12/15/2020   02:10:42  (  46.16,  -0.23)    3.99                 2
 12/15/2020   02:58:47   ( -55.32, 171.41) 12/15/2020   02:57:36  ( -55.32, 171.42)    0.70                71
 12/17/2020   18:26:54   (  46.57, 115.91) 12/17/2020   18:27:03  (  46.58, 115.81)    7.70                 9
 12/17/2020   19:15:11   ( -55.16, -72.75) 12/17/2020   19:14:07  ( -55.16, -72.78)    1.97                64
 12/20/2020   10:43:09   (  46.93,-128.02) 12/20/2020   10:43:25  (  46.93,-128.17)   11.44                16
 12/20/2020   11:31:59   ( -53.64,  42.36) 12/20/2020   11:31:01  ( -53.64,  42.34)    1.27                58
 12/23/2020   02:59:24   (  47.28, -11.95) 12/23/2020   02:59:46  (  47.33, -12.13)   14.91                22