--- a/.cron.yml
+++ b/.cron.yml
@@ -6,29 +6,43 @@ jobs:
     - name: nightly-desktop
       job:
           type: decision-task
           treeherder-symbol: Nd
           triggered-by: nightly
           target-tasks-method: nightly_linux
       run-on-projects:
           - mozilla-central
+          - mozilla-aurora
           - date
-      when: []  # never (temporary)
+      when:
+          by-project:
+            # Match buildbot starts for now
+            date: [{hour: 16, minute: 0}]
+            mozilla-central: [{hour: 11, minute: 0}]
+            mozilla-aurora: [{hour: 8, minute: 45}]  # Buildbot uses minute 40
+            # No default
 
     - name: nightly-android
       job:
           type: decision-task
           treeherder-symbol: Na
           triggered-by: nightly
           target-tasks-method: nightly_fennec
       run-on-projects:
           - mozilla-central
+          - mozilla-aurora
           - date
-      when: []  # never (temporary)
+      when:
+        by-project:
+            # Match buildbot starts for now
+            date: [{hour: 16, minute: 0}]
+            mozilla-central: [{hour: 11, minute: 0}]
+            mozilla-aurora: [{hour: 8, minute: 45}]  # Buildbot uses minute 40
+            # No default
 
     - name: nightly-mochitest-valgrind
       job:
           type: decision-task
           treeherder-symbol: Vg
           target-tasks-method: mochitest_valgrind
       run-on-projects:
           - mozilla-central