Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 10 13.  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   (  78.14,  -2.49) 10/21/2021   10:41:54  (  78.12,  -2.52)    1.79                75
 10/21/2021   11:33:53   ( -78.14, 164.79) 10/21/2021   11:32:51  ( -78.13, 164.79)    1.57                62
 10/21/2021   12:24:38   (  78.14, -27.88) 10/21/2021   12:23:54  (  78.13, -27.97)    2.36                44
 10/21/2021   13:15:22   ( -78.15, 139.40) 10/21/2021   13:14:51  ( -78.14, 139.34)    1.73                31
 10/21/2021   14:06:07   (  78.15, -53.27) 10/21/2021   14:05:54  (  78.14, -53.42)    3.48                13
 10/21/2021   14:56:51   ( -78.15, 114.01) 10/21/2021   14:56:51  ( -78.15, 113.89)    2.76                 0
 10/21/2021   15:47:36   (  78.15, -78.67) 10/21/2021   15:47:53  (  78.18, -78.65)    3.76                17
 10/21/2021   16:38:20   ( -78.15,  88.62) 10/21/2021   16:38:51  ( -78.15,  88.44)    4.03                31
 10/21/2021   17:29:06   (  78.19,-104.27) 10/21/2021   17:29:53  (  78.19,-104.10)    3.98                47
 10/21/2021   18:19:50   ( -78.20,  63.01) 10/21/2021   18:20:51  ( -78.16,  62.99)    3.96                61
 10/21/2021   19:10:40   (  78.39,-130.78) 10/21/2021   19:11:49  (  78.34,-128.63)   48.34                69