The better the day, the better the deed.

The saying playfully turns an objection about a holy day around: the day’s special standing becomes a reason to approve of an action rather than to avoid it.

It can excuse an outing or other activity on a day associated with religious observance, particularly Sunday. Its point is a witty defence of going ahead, not a general rule that good timing makes every action worthwhile.

Use it as a playful reply when someone objects to an outing or other activity because it falls on Sunday or another holy day. The reply treats the day’s special character as a point in the plan’s favour.