Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 5 5.  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)
 05/09/2021   10:24:01   ( -78.49, 179.11) 05/09/2021   10:22:48  ( -78.50, 178.25)   19.14                73
 05/09/2021   11:14:48   (  78.56, -13.99) 05/09/2021   11:13:49  (  78.56, -14.10)    2.51                59
 05/09/2021   12:05:32   ( -78.57, 153.28) 05/09/2021   12:04:46  ( -78.58, 153.32)    1.63                46
 05/09/2021   12:56:17   (  78.56, -39.37) 05/09/2021   12:55:49  (  78.57, -39.51)    3.27                28
 05/09/2021   13:47:01   ( -78.57, 127.89) 05/09/2021   13:46:46  ( -78.60, 127.91)    2.54                15
 05/09/2021   14:37:47   (  78.60, -64.98) 05/09/2021   14:37:49  (  78.59, -64.91)    2.35                 2
 05/09/2021   15:28:30   ( -78.57, 102.51) 05/09/2021   15:28:46  ( -78.61, 102.50)    3.77                16
 05/09/2021   16:19:16   (  78.60, -90.36) 05/09/2021   16:19:49  (  78.60, -90.32)    1.02                33
 05/09/2021   17:10:00   ( -78.61,  76.90) 05/09/2021   17:10:47  ( -78.59,  76.85)    3.31                47
 05/09/2021   18:00:45   (  78.61,-115.74) 05/09/2021   18:01:49  (  78.61,-115.73)    0.72                64
 05/09/2021   18:51:33   ( -78.76,  50.58) 05/09/2021   18:52:44  ( -78.70,  52.17)   35.21                71