Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP
TLE Epoch: 2021 6 18.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-19) NOAA-19 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/20/2021   19:53:10   (  78.11,-145.11) 06/20/2021   19:54:22  (  78.14,-144.10)   23.15                72
 06/20/2021   20:44:06   ( -78.20,  22.70) 06/20/2021   20:45:09  ( -78.24,  22.68)    3.89                63
 06/20/2021   21:35:07   (  78.24,-169.86) 06/20/2021   21:35:54  (  78.22,-169.92)    2.20                47
 06/20/2021   22:26:06   ( -78.22,  -2.72) 06/20/2021   22:26:39  ( -78.24,  -2.70)    2.70                33
 06/20/2021   23:17:07   (  78.25, 164.72) 06/20/2021   23:17:24  (  78.22, 164.70)    2.80                17
 06/21/2021   00:08:06   ( -78.23, -28.15) 06/21/2021   00:08:09  ( -78.24, -28.09)    2.01                 3
 06/21/2021   00:59:07   (  78.26, 139.29) 06/21/2021   00:58:54  (  78.23, 139.31)    3.90                13
 06/21/2021   01:50:06   ( -78.24, -53.57) 06/21/2021   01:49:39  ( -78.24, -53.47)    2.29                27
 06/21/2021   02:41:07   (  78.27, 113.87) 06/21/2021   02:40:25  (  78.27, 113.71)    3.56                42
 06/21/2021   03:32:06   ( -78.25, -78.99) 06/21/2021   03:31:09  ( -78.24, -78.85)    3.30                57
 06/21/2021   04:23:07   (  78.28,  88.44) 06/21/2021   04:21:55  (  78.27,  88.33)    3.07                72