Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 1 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 01/21/2025   22:47:00   (   0.02,-137.01) (  -0.79,-140.58)  406.95                80
 01/22/2025   22:30:53   (   0.02,-137.01) (   0.22,-136.04)  110.35                80
 01/24/2025   10:52:37   (  -0.02,-137.00) (   0.92,-141.30)  490.19                80
 01/25/2025   10:31:09   (  -0.03,-136.99) (  -0.10,-136.76)   26.56                80
 01/27/2025   22:34:13   (   0.04,-136.97) (  -0.08,-137.51)   60.86                80
 01/28/2025   22:18:06   (   0.04,-136.96) (   0.95,-132.97)  455.35                80
 01/30/2025   10:39:49   (  -0.04,-136.93) (   0.23,-138.22)  146.47                80
 01/31/2025   10:18:36   (  -0.04,-136.92) (  -0.75,-133.67)  369.60                65
 02/01/2025   22:40:12   (   0.04,-136.90) (  -0.43,-138.96)  234.95                80
 02/02/2025   22:24:04   (   0.04,-136.88) (   0.60,-134.42)  280.88                80