The foreign exchange market operates across time zones, but participation is not equally strong every business day. Public holidays can close banks, exchanges, government offices, and payment systems in one financial center while currency dealing continues elsewhere. The market remains open, yet the mix of participants supplying liquidity can look noticeably different.
For forex trading, checking the holiday calendar provides information that an economic calendar alone may miss. A day without major data releases can still produce unusual spreads, uneven activity, or abrupt price movements simply because an important financial center is operating with fewer participants.
Local Holidays Can Remove a Major Source of Liquidity
Currency liquidity depends partly on banks and other institutions continuously quoting prices and processing transactions. When a major center is closed, fewer participants may be available to absorb incoming orders.
The effect varies by pair. A holiday in Japan can have greater consequences for yen pairs during Asian hours than for a European cross whose main liquidity providers remain active. Likewise, a UK holiday can alter conditions during hours normally dominated by London.
Volume may return when another region opens, so holiday effects can also change during the same trading day rather than remaining constant for 24 hours.
Wider Spreads Can Appear Without Dramatic Price Movement
Reduced participation can affect transaction costs even when the chart looks quiet. Dealers facing less depth may quote wider bid-ask spreads because replacing or hedging exposure becomes more difficult.
A pair might spend an hour inside a narrow 20-pip range while its typical spread expands from one pip to three. A market order therefore starts from a less favorable position despite the absence of a visible breakout.
Low volatility and favorable execution are not interchangeable conditions. A calm holiday session can provide fewer usable prices than a faster session with considerably more institutional participation.
Modest Orders Can Produce Disproportionate Moves
Imagine AUD/NZD trading around 1.0860 during a regional holiday affecting a significant part of the New Zealand financial system. Participation is lighter than usual, and available orders above 1.0870 are relatively sparse.
A sizeable commercial AUD purchase reaches the market. Under normal conditions, several layers of sell orders might absorb much of the demand. With less depth available, the pair advances rapidly through 1.0870 and reaches 1.0895 before additional sellers appear.
No new economic information was required to create the move. The order encountered less opposing liquidity, allowing its price impact to become unusually large. Once regular participation returns, follow-through depends on whether broader demand supports the higher level.
Holiday Effects Can Spill Into Adjacent Sessions
A holiday does not influence only the hours when offices are formally closed. In forex trading, participation can decline beforehand as institutions reduce activity, while reopening can create accumulated demand from transactions postponed during the closure.
Settlement arrangements can also be affected because currency transactions depend on banking days in the currencies involved. A holiday affecting one side of a pair may alter value dates or rollover treatment even when the other country’s banking system operates normally.
The result is a trading day whose rhythm differs from the standard session pattern. Normal assumptions about when liquidity improves may need adjustment.
Overlapping Holidays Can Produce the Largest Distortions
One financial center being closed may leave enough participation elsewhere to maintain relatively orderly conditions. Two important centers observing holidays on the same day can remove a much larger share of normal activity.
Calendar placement also matters around year-end periods and holidays adjacent to weekends. Institutional desks may operate with reduced staffing even on nearby business days that are technically open.
Before entering a currency position, mark holidays affecting both currencies in the pair and the financial centers that normally dominate the intended trading hours. Compare the planned entry with the next major session opening, check whether settlement or rollover timing changes, and inspect the live spread rather than assuming ordinary conditions. If liquidity is unusually thin, treat recent price movement as evidence from a reduced market first, then judge whether it persists when normal participation returns.