Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 10 16.  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,  -2.48) 10/21/2021   10:41:54  (  78.13,  -2.45)    0.89                75
 10/21/2021   11:33:53   ( -78.14, 164.78) 10/21/2021   11:32:51  ( -78.14, 164.85)    1.62                62
 10/21/2021   12:24:38   (  78.14, -27.88) 10/21/2021   12:23:54  (  78.14, -27.90)    0.59                44
 10/21/2021   13:15:22   ( -78.15, 139.39) 10/21/2021   13:14:51  ( -78.15, 139.41)    0.26                31
 10/21/2021   14:06:07   (  78.14, -53.27) 10/21/2021   14:05:54  (  78.15, -53.35)    1.99                13
 10/21/2021   14:56:51   ( -78.15, 114.00) 10/21/2021   14:56:51  ( -78.16, 113.96)    1.20                 0
 10/21/2021   15:47:36   (  78.15, -78.66) 10/21/2021   15:47:54  (  78.16, -78.80)    3.42                18
 10/21/2021   16:38:20   ( -78.16,  88.61) 10/21/2021   16:38:51  ( -78.17,  88.51)    2.59                31
 10/21/2021   17:29:06   (  78.19,-104.27) 10/21/2021   17:29:54  (  78.17,-104.25)    2.85                48
 10/21/2021   18:19:50   ( -78.20,  63.00) 10/21/2021   18:20:51  ( -78.17,  63.06)    3.12                61
 10/21/2021   19:10:40   (  78.39,-130.77) 10/21/2021   19:11:49  (  78.36,-128.56)   49.78                69