Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 3 17.  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)
 03/29/2021   06:38:31   ( -78.68,-125.87) 03/29/2021   06:37:21  ( -78.66,-125.88)    2.15                70
 03/29/2021   07:29:15   (  78.67,  41.48) 03/29/2021   07:28:15  (  78.67,  41.43)    1.46                60
 03/29/2021   08:20:00   ( -78.68,-151.25) 03/29/2021   08:19:21  ( -78.67,-151.28)    0.98                39
 03/29/2021   09:10:44   (  78.68,  16.11) 03/29/2021   09:10:15  (  78.68,  16.03)    1.72                29
 03/29/2021   10:01:29   ( -78.68,-176.62) 03/29/2021   10:01:21  ( -78.69,-176.68)    1.44                 8
 03/29/2021   10:52:13   (  78.68,  -9.27) 03/29/2021   10:52:15  (  78.69,  -9.36)    2.92                 2
 03/29/2021   11:42:58   ( -78.68, 158.00) 03/29/2021   11:43:21  ( -78.70, 157.92)    2.81                23
 03/29/2021   12:33:43   (  78.71, -34.88) 03/29/2021   12:34:15  (  78.71, -34.76)    2.63                32
 03/29/2021   13:24:28   ( -78.72, 132.39) 03/29/2021   13:25:21  ( -78.72, 132.52)    2.93                53
 03/29/2021   14:15:12   (  78.72, -60.26) 03/29/2021   14:16:15  (  78.72, -60.16)    2.18                63