diff --git a/.github/workflows/tzdbupdate.yml b/.github/workflows/tzdbupdate.yml
index f58db14b9..3b4b36db8 100644
--- a/.github/workflows/tzdbupdate.yml
+++ b/.github/workflows/tzdbupdate.yml
@@ -2,7 +2,7 @@ name: TZDB check
 
 on:
   schedule:
-    - cron:  '0 3 * * 1,3,5'
+    - cron:  '0 3,16 * * 1,2,3,5'
 
 jobs:
   tzdbcheck:
@@ -55,7 +55,7 @@ jobs:
       if: env.NOOP != 'true'
       working-directory: target/tz
       run: |
-        git checkout master
+        git checkout main
         git reset --hard ${LATEST_TZDB} --
         git status
     - name: Copy files