Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 5 10.  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)
 05/11/2025   15:48:14   (   0.00, 140.74) (  -0.65, 143.78)  345.24                80
 05/13/2025   04:10:12   (  -0.00, 140.74) (  -0.49, 138.46)  259.60                80
 05/14/2025   03:54:09   (  -0.00, 140.73) (   0.52, 142.98)  257.00                80
 05/15/2025   16:15:58   (  -0.00, 140.72) (   0.69, 137.71)  342.79                80
 05/16/2025   15:54:35   (  -0.01, 140.71) (  -0.33, 142.24)  173.78                80
 05/18/2025   04:16:33   (   0.01, 140.70) (  -0.81, 136.92)  430.77                80
 05/19/2025   04:00:29   (   0.02, 140.69) (   0.16, 141.45)   86.48                80
 05/21/2025   16:03:35   (   0.01, 140.64) (  -0.03, 140.69)    7.00                80
 05/24/2025   04:04:09   (   0.01, 140.61) (  -0.13, 139.91)   79.35                80