Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 9 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 09/19/2021   06:59:16   (   0.36,-127.96) (   0.23,-128.63)   76.21                80
 09/21/2021   06:49:42   (   0.36,-127.90) (   0.81,-125.66)  253.62                80
 09/21/2021   19:08:17   (  -0.37,-127.84) (   0.28,-130.82)  340.16                80
 09/23/2021   18:56:04   (  -0.37,-127.77) (  -0.36,-127.87)   10.65                80
 09/25/2021   18:46:30   (  -0.36,-127.71) (  -0.95,-124.91)  318.50                80
 09/26/2021   07:05:14   (   0.38,-127.74) (  -0.13,-130.10)  268.76                80
 09/28/2021   06:55:40   (   0.37,-127.67) (   0.46,-127.14)   59.58                80
 09/30/2021   06:43:26   (   0.36,-127.59) (   1.06,-124.18)  387.25                80
 09/30/2021   19:02:01   (  -0.37,-127.52) (   0.04,-129.33)  207.23                80