Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 5 9.  Predictions up to the next  14.0 days:

     Date     Time(HIMAWARI-9)   HIMAWARI-9 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 05/10/2025   16:09:38   (   0.00, 140.74) (   0.35, 139.25)  170.33                80
 05/11/2025   15:48:14   (   0.00, 140.74) (  -0.66, 143.77)  345.82                80
 05/13/2025   04:10:12   (  -0.00, 140.74) (  -0.54, 138.47)  259.36                80
 05/14/2025   03:54:08   (  -0.00, 140.73) (   0.48, 142.99)  257.14                80
 05/15/2025   16:15:58   (  -0.00, 140.71) (   0.68, 137.71)  342.64                80
 05/16/2025   15:54:35   (  -0.00, 140.71) (  -0.34, 142.23)  173.82                80
 05/18/2025   04:16:32   (   0.01, 140.71) (  -0.85, 136.93)  430.97                80
 05/19/2025   04:00:29   (   0.01, 140.69) (   0.18, 141.45)   86.10                80
 05/21/2025   16:00:55   (   0.02, 140.65) (   0.01, 140.70)    6.11                80