diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index a8db991..6deee85 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -1,4 +1,4 @@
-<!-- Please make the PR against the `master` branch. -->
+<!-- Please make the PR against the `main` branch. -->
 
 <!-- Describe what your PR does, and why -->
 
diff --git a/pyorbital/check_platform.py b/pyorbital/check_platform.py
index 2a14e1d..441a5e5 100755
--- a/pyorbital/check_platform.py
+++ b/pyorbital/check_platform.py
@@ -29,7 +29,7 @@
     parser = argparse.ArgumentParser(
         description='Check if a satellite is supported.')
     parser.add_argument("-s", "--satellite",
-                        help=("Name of the Satellite - following WMO Oscar naming."),
+                        help=("Name of the Satellite [in upper case] - following WMO Oscar naming."),
                         default=None,
                         required=True,
                         type=str)
diff --git a/pyorbital/etc/platforms.txt b/pyorbital/etc/platforms.txt
index cb5fb37..0a9d767 100644
--- a/pyorbital/etc/platforms.txt
+++ b/pyorbital/etc/platforms.txt
@@ -28,10 +28,16 @@ FY-3A 32958
 FY-3B 37214
 FY-3C 39260
 FY-3D 43010
+FY-3E 49008
+FY-3F 57490
+FY-3G 56232
 GOES-13 29155
 GOES-14 35491
 GOES-15 36411
 GOES-16 41866
+GOES-17 43226
+GOES-18 51850
+GOES-19 60133
 Himawari-6 28622
 Himawari-7 28937
 Himawari-8 40267
@@ -70,6 +76,9 @@ NOAA-20 43013
 NOAA-21 54234
 RadarSat-2 32382
 Sentinel-1A 39634
+Sentinel-1B 41456
+Sentinel-2A 40697
+Sentinel-2B 42063
 Sentinel-3A 41335
 Sentinel-3B 43437
 Sentinel-5P 42969