Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NOAA-19
TLE Epoch: 2021 9 18.  Predictions up to the next  14.0 days:

     Date     Time(LANDSAT-8) LANDSAT-8 Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 09/18/2021   16:23:34   ( -80.53, 146.73) 09/18/2021   16:22:27  ( -80.53, 146.64)    1.66                67
 09/18/2021   17:13:01   (  80.51, -45.88) 09/18/2021   17:13:30  (  80.53, -45.94)    2.20                29
 09/20/2021   22:46:45   ( -80.53,  50.90) 09/20/2021   22:46:33  ( -80.53,  50.87)    0.55                12
 09/23/2021   04:20:29   (  80.52, 147.42) 09/23/2021   04:19:44  (  80.53, 147.51)    1.88                45
 09/23/2021   05:09:56   ( -80.52, -44.95) 09/23/2021   05:10:39  ( -80.52, -44.91)    0.80                43
 09/25/2021   10:43:39   (  80.55,  51.86) 09/25/2021   10:43:50  (  80.52,  51.82)    2.76                11
 09/27/2021   16:17:24   ( -80.54, 148.32) 09/27/2021   16:16:53  ( -80.54, 148.19)    2.45                31
 09/27/2021   17:06:51   (  80.51, -44.36) 09/27/2021   17:07:57  (  80.53, -44.26)    3.14                66
 09/29/2021   21:51:07   (  80.55,-114.94) 09/29/2021   21:50:04  (  80.54,-114.95)    1.46                63