Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 7 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 07/16/2025   19:24:30   (   0.06, -89.53) (  -0.12, -90.18)   75.42                80
 07/17/2025   19:08:27   (   0.05, -89.53) (   0.95, -85.66)  441.39                80
 07/19/2025   07:27:34   (  -0.06, -89.50) (   0.25, -90.93)  162.35                80
 07/20/2025   07:11:30   (  -0.06, -89.51) (  -0.76, -86.40)  354.32                80
 07/21/2025   19:30:47   (   0.08, -89.55) (  -0.43, -91.71)  246.65                80
 07/22/2025   19:14:42   (   0.07, -89.55) (   0.58, -87.17)  270.11                80
 07/24/2025   07:33:51   (  -0.09, -89.52) (   0.56, -92.45)  333.44                80
 07/25/2025   07:17:46   (  -0.08, -89.53) (  -0.45, -87.92)  183.83                80
 07/26/2025   19:37:04   (   0.09, -89.58) (  -0.72, -93.23)  415.68                80
 07/27/2025   19:20:59   (   0.09, -89.60) (   0.29, -88.70)  102.13                80