Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 12 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)
 12/19/2021   06:38:55   (   0.12,-127.79) (   0.88,-124.14)  415.39                80
 12/19/2021   19:02:49   (  -0.11,-127.81) (   0.21,-129.30)  168.63                80
 12/21/2021   18:47:56   (  -0.11,-127.88) (  -0.42,-126.34)  174.37                80
 12/22/2021   07:11:59   (   0.09,-127.89) (  -0.66,-131.54)  414.11                80
 12/24/2021   06:59:45   (   0.09,-127.95) (  -0.03,-128.58)   71.55                80
 12/26/2021   06:44:51   (   0.09,-128.00) (   0.61,-125.63)  270.71                80
 12/26/2021   19:08:45   (  -0.07,-128.02) (   0.54,-130.77)  313.98                80
 12/28/2021   18:53:51   (  -0.08,-128.07) (  -0.10,-127.82)   27.78                80
 12/30/2021   18:41:37   (  -0.08,-128.11) (  -0.75,-124.87)  368.44                80
 12/31/2021   07:05:41   (   0.06,-128.12) (  -0.32,-130.06)  220.44                80