diff --git a/Custom-campaigns.md b/Custom-campaigns.md
index 6e3d020..733c602 100644
--- a/Custom-campaigns.md
+++ b/Custom-campaigns.md
@@ -34,7 +34,7 @@ This json file should contain a json object, with the following parameters :
   If `version` is not set or is `"0"`, the campaign is from an unknown version of the game and will be marked as incompatible in the new game wizard.
 * `recommended_player_faction`: (Optional) The recommended player faction (will be automatically selected by default on the faction selection page)
 * `recommended_enemy_faction`: (Optional) The recommended enemy faction (will be automatically selected by default on the faction selection page)
-* `recommended_start_date`: (Optional) The recommended start date for the campaign in YYYY-MM-DD format. (since campaign version 9.1)
+* `recommended_start_date`: (Optional) The recommended start date for the campaign in YYYY-MM-DD format. This field can optionally include a start time to set the time for turn 1. E.g. `2004-01-07 06:00:00`. If the time is omitted, the campaign will start at a random hour in the middle of the day. (since campaign version 10.3)
 * `recommended_player_money`: (Optional) The recommended player budget as integer. Default=2000. (since campaign version 10.1)
 * `recommended_enemy_money`: (Optional) The recommended enemy budget as integer. Default=2000. (since campaign version 10.1)
 * `recommended_player_income_multiplier`: (Optional) The recommended player income multiplier as float. Default=1.0. (since campaign version 10.1)