Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 4 27.  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   10:24:02   ( -78.50, 179.10) 05/09/2021   10:22:49  ( -78.49, 178.17)   20.67                73
 05/09/2021   11:14:49   (  78.57, -14.04) 05/09/2021   11:13:49  (  78.58, -13.97)    1.53                60
 05/09/2021   12:05:33   ( -78.57, 153.26) 05/09/2021   12:04:47  ( -78.57, 153.24)    0.70                46
 05/09/2021   12:56:18   (  78.57, -39.42) 05/09/2021   12:55:49  (  78.59, -39.38)    2.06                29
 05/09/2021   13:47:02   ( -78.58, 127.88) 05/09/2021   13:46:47  ( -78.58, 127.83)    1.46                15
 05/09/2021   14:37:47   (  78.57, -64.80) 05/09/2021   14:37:49  (  78.60, -64.79)    3.20                 2
 05/09/2021   15:28:31   ( -78.58, 102.50) 05/09/2021   15:28:47  ( -78.60, 102.42)    2.78                16
 05/09/2021   16:19:17   (  78.61, -90.41) 05/09/2021   16:19:50  (  78.58, -90.44)    3.64                33
 05/09/2021   17:10:01   ( -78.62,  76.89) 05/09/2021   17:10:47  ( -78.61,  77.01)    2.68                46
 05/09/2021   18:00:46   (  78.62,-115.79) 05/09/2021   18:01:50  (  78.59,-115.85)    2.61                64
 05/09/2021   18:51:33   ( -78.73,  50.81) 05/09/2021   18:52:45  ( -78.69,  52.08)   28.18                72