Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 3 25.  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   ( -78.67,-125.84) 03/29/2021   06:37:20  ( -78.68,-125.71)    2.98                70
 03/29/2021   07:29:14   (  78.66,  41.55) 03/29/2021   07:28:15  (  78.66,  41.39)    3.57                59
 03/29/2021   08:19:59   ( -78.68,-151.22) 03/29/2021   08:19:21  ( -78.66,-151.36)    3.34                38
 03/29/2021   09:10:44   (  78.70,  15.94) 03/29/2021   09:10:15  (  78.67,  15.99)    3.28                29
 03/29/2021   10:01:28   ( -78.68,-176.59) 03/29/2021   10:01:21  ( -78.68,-176.76)    3.59                 7
 03/29/2021   10:52:13   (  78.70,  -9.44) 03/29/2021   10:52:15  (  78.69,  -9.41)    1.77                 2
 03/29/2021   11:42:58   ( -78.72, 157.80) 03/29/2021   11:43:21  ( -78.69, 157.84)    2.78                23
 03/29/2021   12:33:42   (  78.70, -34.82) 03/29/2021   12:34:15  (  78.70, -34.81)    0.27                33
 03/29/2021   13:24:27   ( -78.72, 132.42) 03/29/2021   13:25:21  ( -78.71, 132.44)    1.27                54
 03/29/2021   14:15:11   (  78.71, -60.19) 03/29/2021   14:16:15  (  78.72, -60.21)    1.25                64