Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2023 1 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 01/29/2023   18:39:06   (   0.06, -75.19) (  -0.72, -78.77)  407.00                80
 01/30/2023   18:23:01   (   0.05, -75.19) (   0.29, -74.23)  110.17                80
 02/01/2023   06:44:47   (  -0.05, -75.20) (   0.89, -79.50)  489.28                80
 02/02/2023   06:23:21   (  -0.04, -75.21) (  -0.12, -74.97)   28.16                80
 02/04/2023   18:26:30   (   0.04, -75.23) (  -0.08, -75.73)   57.48                80
 02/05/2023   18:10:25   (   0.04, -75.24) (   0.94, -71.20)  460.44                80
 02/07/2023   06:32:11   (  -0.03, -75.26) (   0.24, -76.47)  137.34                80
 02/08/2023   06:10:46   (  -0.03, -75.28) (  -0.79, -71.94)  380.93                80
 02/09/2023   18:32:40   (   0.03, -75.30) (  -0.42, -77.23)  220.66                80
 02/10/2023   18:16:35   (   0.03, -75.32) (   0.61, -72.70)  298.06                80