Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 4 26.  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   ( -78.50, 179.08) 05/09/2021   10:22:48  ( -78.50, 178.25)   18.25                73
 05/09/2021   11:14:48   (  78.58, -14.07) 05/09/2021   11:13:49  (  78.55, -14.14)    3.05                59
 05/09/2021   12:05:32   ( -78.58, 153.24) 05/09/2021   12:04:46  ( -78.58, 153.32)    1.90                46
 05/09/2021   12:56:17   (  78.58, -39.45) 05/09/2021   12:55:49  (  78.57, -39.54)    2.48                28
 05/09/2021   13:47:01   ( -78.58, 127.85) 05/09/2021   13:46:46  ( -78.59, 127.91)    1.93                15
 05/09/2021   14:37:46   (  78.58, -64.83) 05/09/2021   14:37:49  (  78.58, -64.95)    2.64                 3
 05/09/2021   15:28:30   ( -78.58, 102.47) 05/09/2021   15:28:46  ( -78.61, 102.50)    2.77                16
 05/09/2021   16:19:15   (  78.58, -90.21) 05/09/2021   16:19:49  (  78.59, -90.36)    3.43                34
 05/09/2021   17:09:59   ( -78.58,  77.09) 05/09/2021   17:10:46  ( -78.62,  77.09)    3.92                47
 05/09/2021   18:00:45   (  78.62,-115.83) 05/09/2021   18:01:49  (  78.61,-115.77)    2.21                64
 05/09/2021   18:51:33   ( -78.77,  50.53) 05/09/2021   18:52:43  ( -78.73,  52.41)   40.96                70