Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 6 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)
 07/03/2021   08:49:03   (  78.18,  24.99) 07/03/2021   08:47:56  (  78.19,  22.15)   64.54                67
 07/03/2021   09:39:54   ( -78.44,-169.18) 07/03/2021   09:38:51  ( -78.44,-169.04)    3.09                63
 07/03/2021   10:30:38   (  78.42,  -1.73) 07/03/2021   10:29:50  (  78.42,  -1.89)    3.57                48
 07/03/2021   11:21:23   ( -78.44, 165.44) 07/03/2021   11:20:51  ( -78.45, 165.54)    2.27                32
 07/03/2021   12:12:08   (  78.46, -27.34) 07/03/2021   12:11:50  (  78.43, -27.32)    2.97                18
 07/03/2021   13:02:52   ( -78.45, 140.05) 07/03/2021   13:02:51  ( -78.46, 140.11)    2.11                 1
 07/03/2021   13:53:37   (  78.46, -52.73) 07/03/2021   13:53:50  (  78.44, -52.74)    2.02                13
 07/03/2021   14:44:21   ( -78.45, 114.67) 07/03/2021   14:44:51  ( -78.47, 114.69)    2.72                30
 07/03/2021   15:35:06   (  78.46, -78.11) 07/03/2021   15:35:50  (  78.45, -78.17)    1.72                44
 07/03/2021   16:25:50   ( -78.45,  89.29) 07/03/2021   16:26:51  ( -78.48,  89.27)    3.74                61
 07/03/2021   17:16:35   (  78.47,-103.49) 07/03/2021   17:17:50  (  78.47,-103.60)    2.33                75