Which Nine Was Meant: One Digit, Two Hours

Some messages look finished and are not. This one had everything a first booking needs. A hotel, a room number, a length of ninety minutes, the word tomorrow and the number 9. The writer had clearly thought about it. The only thing missing was one small detail: which nine.

Two nines in one day

For the person who wrote it, there was only one nine. They were thinking about the evening, after a long day of walking. For them, nine in the morning was not even a possibility. Who books a massage at nine in the morning on holiday? But the reader of a message does not live inside the writer's head. Some guests do book in the morning. Some arrive on a night flight and want to sleep first, then book at nine, before a day of meetings. So the number 9, on its own, had two readings.

The reply did not guess. It asked one short question: 09:00 or 21:00? The answer came back in a few seconds: 21:00, of course. Nobody was annoyed. The booking was fixed in the next message.

Why the reply asks

A guess would have been right most of the time. That is exactly the problem with guessing. Right most of the time means wrong some of the time, and a wrong hour is not a small mistake. A therapist at the door twelve hours early, or twelve hours late, is a booking that did not happen. So when a number can be read two ways, the reply asks, every time. It costs one message.

Tomorrow is a second question

The same message said tomorrow. It was sent at 23:40. By the time the reply was written, it was already after midnight. Was tomorrow the day that had just started, or the day after it? The writer meant the new day, the one that had just begun. They were still thinking of the evening before as today, because they had not slept yet. Most people do.

So the reply asked a second small question, and wrote the date in full: Thursday 10 September, 21:00? Yes. Now there was only one possible hour on one possible day.

What the message could have said

Here is the same request, written so that no question is needed:

Thursday 10 September, 21:00, 90 minutes.

The day of the week, the date with the month in letters, the hour on the twenty-four hour clock and the length. Twelve words and numbers. It is shorter than the original message, not longer, and it cannot be read two ways.

The twenty-four hour clock is not only for Europeans

Some visitors feel that the twenty-four hour clock belongs to other people. It is what trains and airports use, they think, not what normal people write. But you do not need to use it in daily life to use it in one message. You only need to add twelve to any evening hour. Seven becomes 19. Nine becomes 21. Eleven becomes 23. That is the whole skill.

And if the twenty-four hour clock still feels strange, write the other clock in full: 9 pm. The letters pm do the same job as the 21. What does not work is the number alone.

A pattern in the questions

Looking back over many threads, the questions the reply has to ask fall into a few groups. Which nine. Which tomorrow. Which floor. Which currency. Almost none of them come from bad English. They come from very good English that leaves out one small fact, because the writer already knows it. A fluent speaker and a beginner make this mistake equally often.

That is a comfort, in a way. If your English is limited, you are not more likely to write an unclear message. You may even be less likely, because you write carefully and in short lines. The booking message on the page with a message to copy takes this one step further: it has a line for each fact, so none can be left out.

The last line

When the reply came, the guest answered in the way this site suggests: yes, Thursday 10 September, 21:00. It was a small thing. It also meant that both sides had now written the same hour in the same form, and there was nothing left to ask. She knocked at nine in the evening, on the Thursday, at the room that was in the first message. Which was, in the end, exactly what the writer had meant all along.