Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 3 21.  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,-125.86) 03/29/2021   06:37:21  ( -78.67,-125.82)    1.32                70
 03/29/2021   07:29:15   (  78.67,  41.51) 03/29/2021   07:28:15  (  78.68,  41.51)    0.80                60
 03/29/2021   08:20:00   ( -78.68,-151.24) 03/29/2021   08:19:21  ( -78.68,-151.22)    0.70                39
 03/29/2021   09:10:44   (  78.67,  16.13) 03/29/2021   09:10:15  (  78.69,  16.11)    2.29                29
 03/29/2021   10:01:29   ( -78.68,-176.61) 03/29/2021   10:01:21  ( -78.70,-176.61)    1.99                 8
 03/29/2021   10:52:13   (  78.67,  -9.24) 03/29/2021   10:52:15  (  78.71,  -9.28)    3.81                 2
 03/29/2021   11:42:58   ( -78.68, 158.01) 03/29/2021   11:43:21  ( -78.71, 157.99)    3.48                23
 03/29/2021   12:33:43   (  78.71, -34.86) 03/29/2021   12:34:16  (  78.69, -34.93)    3.21                33
 03/29/2021   13:24:28   ( -78.72, 132.40) 03/29/2021   13:25:22  ( -78.69, 132.34)    3.31                54
 03/29/2021   14:15:12   (  78.71, -60.23) 03/29/2021   14:16:16  (  78.70, -60.33)    2.46                64