Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 4 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)
 04/11/2025   04:10:09   (  -0.01, 140.75) (  -0.54, 138.50)  257.43                80
 04/12/2025   03:54:03   (  -0.01, 140.74) (   0.52, 143.02)  260.98                80
 04/13/2025   16:15:48   (   0.01, 140.73) (   0.66, 137.76)  337.45                80
 04/14/2025   15:54:22   (   0.00, 140.71) (  -0.34, 142.30)  180.96                80
 04/16/2025   04:16:16   (  -0.01, 140.68) (  -0.81, 137.00)  418.92                80
 04/17/2025   04:00:10   (  -0.00, 140.66) (   0.20, 141.54)   99.96                80
 04/18/2025   16:21:55   (   0.00, 140.65) (   0.98, 136.28)  497.51                80
 04/19/2025   16:00:29   (   0.00, 140.63) (  -0.03, 140.82)   21.41                80
 04/22/2025   04:03:35   (  -0.00, 140.57) (  -0.13, 140.06)   58.24                80
 04/23/2025   03:47:29   (  -0.00, 140.55) (   0.89, 144.60)  461.61                80
 04/24/2025   16:09:14   (   0.01, 140.51) (   0.28, 139.34)  134.23                80