Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2020 12 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)
 12/17/2020   18:26:54   (  46.55, 115.91) 12/17/2020   18:27:03  (  46.58, 115.81)    7.93                 9
 12/17/2020   19:15:17   ( -54.80, -72.95) 12/17/2020   19:14:13  ( -54.80, -72.96)    1.28                64
 12/20/2020   10:43:08   (  46.97,-128.00) 12/20/2020   10:43:24  (  47.00,-128.15)   11.56                16
 12/20/2020   11:32:09   ( -53.05,  42.06) 12/20/2020   11:31:11  ( -53.05,  42.06)    0.08                58
 12/23/2020   02:59:22   (  47.38, -11.91) 12/23/2020   02:59:45  (  47.41, -12.10)   15.17                23
 12/23/2020   03:49:00   ( -51.35, 157.15) 12/23/2020   03:48:08  ( -51.35, 157.16)    0.69                52
 12/25/2020   19:15:37   (  47.73, 104.17) 12/25/2020   19:16:07  (  47.76, 103.92)   18.79                30
 12/25/2020   20:05:48   ( -49.81, -87.64) 12/25/2020   20:05:02  ( -49.81, -87.62)    0.95                46
 12/28/2020   11:31:51   (  48.08,-139.76) 12/28/2020   11:32:27  (  48.15,-140.04)   22.10                36