Sessions, news and the calendar

USD/ZAR does not move at the same speed all day. The rand is most active when South African banks and companies are at work, and when United States markets are open. Those two periods overlap in the late afternoon South African time. Outside them, the pair can sit still for long stretches. A stop placed in a quiet hour faces a different market from one placed at 15:00 SAST.

The main active window runs from about 09:00 to 17:00 SAST, when local desks are staffed and European trading is under way. A second, often sharper window runs from 15:30 to 22:00 SAST, when United States data and markets come online. The quietest hours are roughly 23:00 to 06:00 SAST, when few large orders are placed. These times shift by an hour when either country changes its clocks.

In a quiet hour, the spread on USD/ZAR may be wider than in the active window, because fewer participants are quoting prices. A stop that sits 25 pips away can be reached by a small order when the book is thin. The same 25 pips in the active window may need a much larger move. This is why the hour matters as much as the level you choose. Check the clock before you check the chart.

A scheduled release is a report or decision with a known time, such as a United States inflation figure or a central bank rate announcement. Around that time, liquidity providers pull their quotes or widen them, because they do not want to be filled at an old price while the market jumps. The result is a spread that can be several times its normal size for a few minutes. On USD/ZAR, a spread of 20 pips can become 55 pips or more.

The extra spread is a real cost on every position open through the release. On 0.10 lots of USD/ZAR, where 1 pip is worth R1.00, the difference between 20 and 55 pips is 35 pips, or R35.00. That cost is charged whether the price moves in your favour or against you. It is not a fee the broker invents; it is the price of trading when quotes are scarce. Commission and swap may be added on top.

A stop can be filled at a worse price than the level you set, because a stop becomes a market order once triggered. In fast conditions, the next available price may be several pips away. This is called slippage, and it is most common in the first seconds after a release. The rand figure you calculated as your maximum loss can therefore be larger. If you are not sure how your broker handles this, test it on a demo account before using real rand.

Most economic calendars show release times in a time zone you choose. Set yours to SAST before you plan anything. A United States release at 08:30 New York time is 14:30 SAST when United States daylight saving is in effect, because South Africa is usually two hours ahead then. When the clocks change, the gap becomes three hours for part of the year. Never assume the time is fixed.

The calendar also marks the importance of each release. High-importance items, such as interest rate decisions and inflation data, tend to move USD/ZAR more than low-importance ones. You do not need to trade them. You need to know they are coming, so you can decide whether to hold a position through them. If you hold, size the position for the wider spread, not the quiet-hour spread.

A practical habit is to note the next two high-importance releases in SAST before you place any order. Write them down, with the currency they affect. If a release falls within the expected life of your trade, either reduce your size or stay out until the first minutes have passed. The first minutes are when spreads are widest and slippage is most likely. Waiting costs nothing; a widened stop can cost rand.