Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 10 21.  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,  -2.50) 10/21/2021   10:41:54  (  78.13,  -2.47)    0.88                75
 10/21/2021   11:33:53   ( -78.15, 164.75) 10/21/2021   11:32:51  ( -78.13, 164.81)    2.18                62
 10/21/2021   12:24:38   (  78.14, -27.89) 10/21/2021   12:23:54  (  78.14, -27.93)    0.95                44
 10/21/2021   13:15:22   ( -78.15, 139.36) 10/21/2021   13:14:51  ( -78.14, 139.36)    1.34                31
 10/21/2021   14:06:07   (  78.15, -53.28) 10/21/2021   14:05:54  (  78.15, -53.38)    2.27                13
 10/21/2021   14:56:51   ( -78.16, 113.97) 10/21/2021   14:56:51  ( -78.15, 113.91)    1.69                 0
 10/21/2021   15:47:36   (  78.15, -78.67) 10/21/2021   15:47:54  (  78.15, -78.83)    3.68                18
 10/21/2021   16:38:20   ( -78.16,  88.58) 10/21/2021   16:38:51  ( -78.16,  88.46)    2.80                31
 10/21/2021   17:29:06   (  78.19,-104.28) 10/21/2021   17:29:54  (  78.16,-104.28)    3.48                48
 10/21/2021   18:19:49   ( -78.17,  63.19) 10/21/2021   18:20:51  ( -78.17,  63.01)    4.10                62
 10/21/2021   19:10:40   (  78.39,-130.78) 10/21/2021   19:11:49  (  78.35,-128.59)   49.39                69