Time of order rules allow you to limit when a voucher is valid. You can specify both times of day and days of the week during which your customers will be able to use the vouchers.
You can think of it as happy hours – only customers checking out on Wednesday between 5 pm and 9 pm will be able to receive a discount.
If you define multiple time of order rules, only one of them has to be met for the redemption to be valid. This means you can have happy hours also on Tuesdays same time and transaction performed during any of those times will be able to redeem a voucher.