All Spot Forex contracts are essentially a customized Forward Contract with set value dates, i.e. date on which Delivery of the contracted item has to take place in exchange for the agreed upon price.
The spot FX market is traded on a 2-business day value date. For trades executed on Monday, the value day, or day of delivery, is Wednesday. However, if a position is opened on Monday and held until Tuesday, then the next value day will be Thursday.
In the event if value date occurs over a weekend or a public holiday of the respective currency, delivery will take place on the next business day.