Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 10 9.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 10/21/2021   10:43:09   (  78.12,  -2.40) 10/21/2021   10:41:54  (  78.14,  -2.40)    2.36                75
 10/21/2021   11:33:53   ( -78.12, 164.90) 10/21/2021   11:32:51  ( -78.15, 164.92)    3.08                62
 10/21/2021   12:24:38   (  78.12, -27.79) 10/21/2021   12:23:54  (  78.15, -27.85)    3.10                44
 10/21/2021   13:15:22   ( -78.13, 139.51) 10/21/2021   13:14:51  ( -78.16, 139.48)    3.60                31
 10/21/2021   14:06:07   (  78.17, -53.40) 10/21/2021   14:05:53  (  78.16, -53.30)    2.52                14
 10/21/2021   14:56:51   ( -78.17, 113.90) 10/21/2021   14:56:50  ( -78.17, 114.03)    2.90                 1
 10/21/2021   15:47:36   (  78.17, -78.79) 10/21/2021   15:47:53  (  78.17, -78.75)    1.15                17
 10/21/2021   16:38:20   ( -78.18,  88.51) 10/21/2021   16:38:50  ( -78.18,  88.58)    1.56                30
 10/21/2021   17:29:05   (  78.18,-104.18) 10/21/2021   17:29:53  (  78.17,-104.20)    0.62                48
 10/21/2021   18:19:49   ( -78.18,  63.12) 10/21/2021   18:20:50  ( -78.18,  63.13)    0.67                61
 10/21/2021   19:10:39   (  78.38,-130.68) 10/21/2021   19:11:48  (  78.36,-128.51)   48.74                69