Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 4 16.  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)
 04/17/2021   10:31:29   ( -46.10,-143.04) 04/17/2021   10:32:12  ( -46.16,-142.77)   21.99                43
 04/17/2021   11:46:42   (  46.01,-143.49) 04/17/2021   11:45:30  (  46.11,-143.93)   35.84                72
 04/20/2021   02:47:49   ( -46.11, -27.11) 04/20/2021   02:48:41  ( -46.16, -26.89)   17.77                52
 04/20/2021   04:03:01   (  46.05, -27.54) 04/20/2021   04:01:58  (  46.16, -28.03)   40.06                63
 04/22/2021   19:04:08   ( -46.06,  88.84) 04/22/2021   19:05:09  ( -46.11,  89.01)   13.56                61
 04/22/2021   19:55:10   (  46.94,-104.20) 04/22/2021   19:54:54  (  47.02,-103.71)   38.35                16
 04/25/2021   11:20:28   ( -46.08,-155.22) 04/25/2021   11:21:37  ( -46.07,-155.10)    9.79                69
 04/25/2021   12:11:20   (  46.43,  11.94) 04/25/2021   12:11:13  (  46.51,  12.36)   33.65                 7
 04/28/2021   03:39:58   ( -57.00, -44.59) 04/28/2021   03:41:12  ( -57.09, -44.24)   23.57                74