Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 4 13.  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)
 04/14/2025   15:54:22   (   0.01, 140.77) (  -0.33, 142.31)  174.53                80
 04/16/2025   04:16:15   (  -0.01, 140.78) (  -0.88, 137.02)  429.46                80
 04/17/2025   04:00:10   (  -0.01, 140.78) (   0.19, 141.54)   87.31                80
 04/19/2025   16:00:28   (   0.01, 140.79) (  -0.02, 140.82)    4.71                80
 04/22/2025   04:03:34   (  -0.02, 140.79) (  -0.20, 140.08)   81.77                80
 04/23/2025   03:47:28   (  -0.02, 140.79) (   0.81, 144.62)  435.97                80
 04/24/2025   16:09:13   (   0.02, 140.78) (   0.36, 139.36)  162.43                80
 04/25/2025   15:47:47   (   0.02, 140.77) (  -0.66, 143.89)  355.40                80
 04/27/2025   04:09:40   (  -0.01, 140.76) (  -0.49, 138.60)  246.55                80