Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 12 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 12/22/2021   18:21:38   (  -0.11,-127.91) (   0.88,-132.25)  494.86                80
 12/23/2021   17:58:19   (  -0.12,-127.94) (  -0.25,-127.25)   77.50                80
 12/25/2021   06:19:59   (   0.10,-127.98) (  -0.74,-131.86)  441.85                80
 12/26/2021   05:56:40   (   0.11,-128.00) (   0.39,-126.87)  130.13                80
 12/27/2021   18:18:10   (  -0.10,-128.05) (   0.67,-131.42)  384.02                80
 12/28/2021   17:54:50   (  -0.10,-128.07) (  -0.46,-126.42)  187.72                80
 12/30/2021   06:16:30   (   0.09,-128.10) (  -0.59,-131.01)  332.70                80
 12/31/2021   05:53:10   (   0.10,-128.12) (   0.55,-126.02)  238.35                80
 01/01/2022   18:14:42   (  -0.09,-128.15) (   0.45,-130.59)  277.43                80
 01/02/2022   17:51:22   (  -0.09,-128.17) (  -0.69,-125.60)  293.40                80
 01/04/2022   06:13:01   (   0.08,-128.18) (  -0.36,-130.19)  228.09                80