Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 7 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 07/12/2021   06:42:06   (   0.10,-127.91) (   0.91,-124.13)  430.32                80
 07/12/2021   19:03:19   (  -0.08,-127.86) (   0.24,-129.28)  161.56                80
 07/14/2021   18:53:46   (  -0.09,-127.79) (  -0.37,-126.31)  166.78                80
 07/15/2021   07:15:09   (   0.07,-127.81) (  -0.71,-131.51)  420.75                80
 07/16/2021   18:41:33   (  -0.10,-127.71) (  -1.05,-123.36)  494.72                80
 07/17/2021   07:02:55   (   0.08,-127.73) (  -0.09,-128.55)   93.02                80
 07/19/2021   06:48:01   (   0.08,-127.64) (   0.53,-125.59)  234.00                80
 07/19/2021   19:09:15   (  -0.07,-127.57) (   0.62,-130.73)  359.48                80
 07/21/2021   18:59:41   (  -0.07,-127.48) (   0.00,-127.77)   33.23                80
 07/23/2021   18:45:34   (  -0.08,-127.38) (  -0.62,-124.81)  292.50                33
 07/24/2021   07:08:50   (   0.06,-127.41) (  -0.51,-130.00)  294.54                80