Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 3 22.  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   ( -78.67,-125.84) 03/29/2021   06:37:21  ( -78.67,-125.82)    0.77                70
 03/29/2021   07:29:15   (  78.67,  41.53) 03/29/2021   07:28:15  (  78.68,  41.51)    1.33                60
 03/29/2021   08:20:00   ( -78.68,-151.22) 03/29/2021   08:19:21  ( -78.68,-151.22)    0.86                39
 03/29/2021   09:10:44   (  78.67,  16.16) 03/29/2021   09:10:15  (  78.69,  16.11)    2.86                29
 03/29/2021   10:01:29   ( -78.68,-176.59) 03/29/2021   10:01:21  ( -78.70,-176.62)    2.37                 8
 03/29/2021   10:52:14   (  78.71,  -9.46) 03/29/2021   10:52:15  (  78.71,  -9.28)    3.77                 1
 03/29/2021   11:42:58   ( -78.68, 158.03) 03/29/2021   11:43:21  ( -78.71, 157.98)    3.89                23
 03/29/2021   12:33:43   (  78.71, -34.83) 03/29/2021   12:34:16  (  78.69, -34.93)    3.15                33
 03/29/2021   13:24:28   ( -78.72, 132.42) 03/29/2021   13:25:22  ( -78.69, 132.34)    3.27                54
 03/29/2021   14:15:12   (  78.71, -60.21) 03/29/2021   14:16:16  (  78.70, -60.33)    2.74                64