Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 7 10.  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)
 07/10/2021   05:53:11   (   0.13,-127.97) (   0.54,-126.07)  217.20                80
 07/11/2021   18:12:04   (  -0.12,-127.90) (   0.49,-130.62)  310.00                80
 07/12/2021   17:54:04   (  -0.13,-127.87) (  -0.60,-125.62)  255.20                80
 07/14/2021   06:13:04   (   0.12,-127.83) (  -0.43,-130.22)  272.04                80
 07/15/2021   05:49:46   (   0.14,-127.79) (   0.72,-125.23)  292.28                80
 07/16/2021   18:08:38   (  -0.12,-127.71) (   0.31,-129.79)  236.18                80
 07/17/2021   17:50:39   (  -0.13,-127.67) (  -0.78,-124.79)  328.56                80
 07/19/2021   06:09:39   (   0.12,-127.63) (  -0.25,-129.38)  198.86                80
 07/20/2021   05:46:20   (   0.13,-127.58) (   0.84,-124.38)  364.67                80
 07/21/2021   18:05:12   (  -0.11,-127.48) (   0.19,-128.94)  165.78                80
 07/22/2021   17:47:12   (  -0.13,-127.44) (  -0.90,-123.94)  397.99                80