Exactly! Love a overcast day when dove hunting."The best time" is also impacted by weather conditions; an overcast or occasionally drizzly day will have them flying most of the day, while a blue-bird day will have them flying in a tighter window starting around mid afternoon. Of course morning shoots are similar in regard to how spread out in time the birds will be flying.
When we have an afternoon hunt scheduled and the overcast conditions could cause the birds to fly early, riding through the field to delay their feeding until later when the hunters are there can be helpful.