Simultaneous Nadir Overpasses (SNOs) between NPP and GCOM-C
TLE Epoch: 2021 12 13.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(GCOM-C) GCOM-C Lat/Lon    Distance(km)  Time Diff(sec)
 12/20/2021   11:44:12   ( -69.57,-178.82) 12/20/2021   11:45:21  ( -69.53,-177.11)   66.52                69
 12/20/2021   12:34:47   (  68.97, -10.67) 12/20/2021   12:35:59  (  68.94, -10.55)    5.78                72
 12/20/2021   13:25:29   ( -68.89, 156.76) 12/20/2021   13:26:30  ( -68.89, 156.76)    0.11                61
 12/20/2021   14:16:15   (  68.88, -35.91) 12/20/2021   14:16:57  (  68.89, -35.86)    2.71                42
 12/20/2021   15:06:58   ( -68.85, 131.45) 12/20/2021   15:07:28  ( -68.84, 131.45)    1.06                30
 12/20/2021   15:57:44   (  68.83, -61.22) 12/20/2021   15:57:55  (  68.84, -61.16)    2.50                11
 12/20/2021   16:48:27   ( -68.81, 106.13) 12/20/2021   16:48:26  ( -68.79, 106.14)    2.12                 1
 12/20/2021   17:39:13   (  68.79, -86.54) 12/20/2021   17:38:53  (  68.78, -86.47)    2.75                20
 12/20/2021   18:29:56   ( -68.76,  80.81) 12/20/2021   18:29:24  ( -68.73,  80.84)    3.18                32
 12/20/2021   19:20:41   (  68.69,-111.78) 12/20/2021   19:19:52  (  68.68,-111.85)    3.09                49
 12/20/2021   20:11:24   ( -68.66,  55.57) 12/20/2021   20:10:22  ( -68.68,  55.53)    2.50                62
 12/20/2021   21:02:06   (  68.43,-136.82) 12/20/2021   21:00:53  (  68.46,-137.37)   22.83                73
 12/20/2021   21:52:41   ( -67.98,  31.08) 12/20/2021   21:51:32  ( -67.98,  29.39)   70.32                69