Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-C
TLE Epoch: 2021 12 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-C Lat/Lon    Distance(km)  Time Diff(sec)
 12/20/2021   18:15:17   (  -0.13,-127.85) (   0.45,-130.59)  311.81                80
 12/21/2021   17:51:58   (  -0.13,-127.88) (  -0.63,-125.59)  260.52                80
 12/23/2021   06:13:39   (   0.12,-127.92) (  -0.36,-130.19)  258.56                80
 12/24/2021   05:50:19   (   0.12,-127.94) (   0.72,-125.19)  313.37                80
 12/25/2021   18:11:52   (  -0.11,-127.99) (   0.30,-129.75)  200.80                80
 12/26/2021   17:48:33   (  -0.11,-128.02) (  -0.85,-124.76)  371.08                80
 12/28/2021   06:10:13   (   0.10,-128.05) (  -0.22,-129.35)  148.76                80
 12/29/2021   05:46:55   (   0.11,-128.07) (   0.93,-124.37)  422.51                80
 12/30/2021   18:08:27   (  -0.09,-128.11) (   0.07,-128.93)   92.95                80
 12/31/2021   17:45:08   (  -0.10,-128.13) (  -1.02,-123.93)  477.97                80
 01/02/2022   06:06:49   (   0.09,-128.15) (   0.01,-128.53)   43.35                80