Simultaneous Nadir Overpasses (SNOs) between NOAA-20 and NOAA-19
TLE Epoch: 2021 9 16.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-20) NOAA-20 Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 09/21/2021   03:56:46   ( -77.88, -83.40) 09/21/2021   03:55:34  ( -77.87, -83.52)    3.12                72
 09/21/2021   04:47:32   (  77.91,  83.80) 09/21/2021   04:46:37  (  77.90,  83.90)    2.25                55
 09/21/2021   05:38:16   ( -77.89,-108.80) 09/21/2021   05:37:33  ( -77.92,-108.75)    3.43                43
 09/21/2021   06:29:02   (  77.91,  58.40) 09/21/2021   06:28:37  (  77.91,  58.45)    1.14                25
 09/21/2021   07:19:46   ( -77.89,-134.20) 09/21/2021   07:19:33  ( -77.93,-134.20)    3.70                13
 09/21/2021   08:10:32   (  77.91,  33.00) 09/21/2021   08:10:37  (  77.92,  33.01)    0.56                 5
 09/21/2021   09:01:17   ( -77.94,-159.80) 09/21/2021   09:01:33  ( -77.93,-159.64)    3.69                16
 09/21/2021   09:52:02   (  77.92,   7.60) 09/21/2021   09:52:37  (  77.93,   7.56)    1.45                35
 09/21/2021   10:42:47   ( -77.94, 174.80) 09/21/2021   10:43:33  ( -77.94, 174.91)    2.55                46
 09/21/2021   11:33:32   (  77.92, -17.80) 09/21/2021   11:34:37  (  77.94, -17.88)    2.57                65
 09/21/2021   12:24:19   ( -78.03, 148.98) 09/21/2021   12:25:32  ( -77.99, 149.68)   16.64                73