Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 3 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)
 03/29/2021   06:38:30   ( -78.66,-125.74) 03/29/2021   06:37:21  ( -78.66,-125.88)    2.98                69
 03/29/2021   07:29:15   (  78.68,  41.42) 03/29/2021   07:28:15  (  78.67,  41.47)    1.80                60
 03/29/2021   08:20:00   ( -78.70,-151.35) 03/29/2021   08:19:21  ( -78.68,-151.28)    2.99                39
 03/29/2021   09:10:44   (  78.69,  16.04) 03/29/2021   09:10:15  (  78.69,  16.07)    0.65                29
 03/29/2021   10:01:29   ( -78.70,-176.73) 03/29/2021   10:01:21  ( -78.69,-176.68)    1.56                 8
 03/29/2021   10:52:13   (  78.69,  -9.34) 03/29/2021   10:52:15  (  78.70,  -9.33)    1.49                 2
 03/29/2021   11:42:58   ( -78.70, 157.89) 03/29/2021   11:43:21  ( -78.70, 157.92)    0.73                23
 03/29/2021   12:33:42   (  78.69, -34.71) 03/29/2021   12:34:15  (  78.71, -34.73)    2.93                33
 03/29/2021   13:24:27   ( -78.70, 132.52) 03/29/2021   13:25:21  ( -78.72, 132.52)    1.80                54
 03/29/2021   14:15:12   (  78.73, -60.33) 03/29/2021   14:16:16  (  78.69, -60.37)    3.74                64