Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 6 28.  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)
 07/03/2021   08:49:04   (  78.22,  24.79) 07/03/2021   08:47:56  (  78.20,  22.20)   58.75                68
 07/03/2021   09:39:54   ( -78.43,-169.11) 07/03/2021   09:38:51  ( -78.44,-169.01)    2.58                63
 07/03/2021   10:30:38   (  78.42,  -1.71) 07/03/2021   10:29:50  (  78.43,  -1.83)    3.17                48
 07/03/2021   11:21:23   ( -78.43, 165.51) 07/03/2021   11:20:51  ( -78.45, 165.57)    2.72                32
 07/03/2021   12:12:08   (  78.46, -27.32) 07/03/2021   12:11:50  (  78.44, -27.26)    2.25                18
 07/03/2021   13:02:52   ( -78.44, 140.13) 07/03/2021   13:02:51  ( -78.47, 140.15)    3.42                 1
 07/03/2021   13:53:37   (  78.46, -52.71) 07/03/2021   13:53:50  (  78.45, -52.69)    0.96                13
 07/03/2021   14:44:22   ( -78.48, 114.52) 07/03/2021   14:44:52  ( -78.44, 114.49)    3.84                30
 07/03/2021   15:35:06   (  78.46, -78.09) 07/03/2021   15:35:50  (  78.46, -78.11)    0.54                44
 07/03/2021   16:25:51   ( -78.48,  89.13) 07/03/2021   16:26:52  ( -78.45,  89.06)    3.15                61
 07/03/2021   17:16:36   (  78.50,-103.70) 07/03/2021   17:17:50  (  78.47,-103.54)    4.87                74