Spotkajmy się na rynku o siódmej.

Because spotkajmy się is the 1st person plural imperative of spotkać się.

• spotkajmy się = let’s meet
• It includes the speaker and the listener(s), just like English let’s ...

This is a very common way to make suggestions in Polish:

• Zróbmy to. = Let’s do it.
• Idźmy. = Let’s go.
• Spotkajmy się. = Let’s meet.

In spotkajmy się, się is part of the verb spotkać się, which means to meet.

In Polish, many verbs use się, and it does not always translate neatly into English. Here it helps create the idea of meeting each other.

Compare:

• spotkać = to meet / to encounter someone
• spotkać się = to meet up, to meet each other

In this sentence, się should not be left out.

These forms mean different things:

• spotkajmy się = let’s meet (suggestion, invitation)
• spotkamy się = we will meet (future statement)

So if you are proposing a meeting, you need spotkajmy się.

Examples:

• Spotkajmy się jutro. = Let’s meet tomorrow.
• Spotkamy się jutro. = We’ll meet tomorrow.

Because after the preposition na meaning on / at, Polish often uses the locative case when talking about location.

So:

• dictionary form: rynek
• after na for location: na rynku

This is similar to how English changes structure after prepositions, except Polish often changes the noun ending too.

Here rynek usually means the market square or town square, not necessarily a place where people are actively buying food or goods.

In many Polish towns and cities, rynek is the main central square. So:

• na rynku often means in the town square / at the market square

A native English speaker might first think of market in the shopping sense, but in this context square is often the more natural idea.

Because na is the normal preposition for many open public spaces and surfaces in Polish, including squares.

So:

• na rynku = at/in the market square

Using w rynku would sound unnatural here.

Very roughly:

• w is often used for being inside something
• na is often used for places seen as open areas, events, surfaces, or certain institutions/settings

For a town square, na rynku is the standard phrase.

Because Polish uses o + a special case form to say at a particular time.

So:

• o siódmej = at seven o’clock

You cannot normally say o siedem for this meaning.

The word siódmej is based on the ordinal number siódma (seventh), because Polish time expressions often work like an implied phrase:

• o siódmej (godzinie) = at the seventh hour

In everyday Polish, godzinie is omitted, but its grammar still affects the form.

Because the implied noun is godzina (hour), which is feminine.

So Polish uses the feminine form of the ordinal number:

• siódma = seventh (feminine basic form)
• o siódmej = at seven

Compare:

• o pierwszej = at one
• o drugiej = at two
• o szóstej = at six
• o siódmej = at seven

This is one of those places where Polish grammar reflects something English no longer shows.

Yes, Polish word order is fairly flexible, but the original sentence is very natural:

• Spotkajmy się na rynku o siódmej.

You could also say:

• O siódmej spotkajmy się na rynku.
• Spotkajmy się o siódmej na rynku.

These all mean basically the same thing, but the emphasis changes slightly.

The original order sounds neutral and natural:

1. suggestion: Spotkajmy się
2. place: na rynku
3. time: o siódmej

Polish often uses a perfective verb in the imperative when talking about a single completed action.

• spotkać się is perfective
• it focuses on the event of meeting as a complete action

That fits well with Let’s meet at seven: it is one specific meeting.

The imperfective partner is spotykać się, which usually refers more to repeated meetings or ongoing habit:

• Często się spotykamy. = We often meet.
• Spotkajmy się jutro. = Let’s meet tomorrow.

It is neutral and natural. By itself, it is neither especially formal nor especially casual.

• Spotkajmy się na rynku o siódmej. = a normal suggestion

If you wanted to sound more polite or indirect, you could say something like:

• Może spotkajmy się na rynku o siódmej. = Maybe let’s meet in the square at seven.
• Spotkajmy się może na rynku o siódmej. = Let’s maybe meet in the square at seven.

But the original sentence is perfectly normal in everyday speech.

A rough pronunciation guide for an English speaker is:

spot-KAI-my shye na RIN-koo o shyud-MEI

A few important points:

• j in Polish sounds like English y in yes
• się sounds roughly like shye, with a nasal vowel at the end
• ry in rynku is not exactly like English ri; Polish y is a different vowel
• ó is pronounced like u
• rz in rynku is not present here, but learners often expect Polish spelling to be harder than it is; this sentence is quite manageable once broken down

If you want, the sentence is easiest to practice in chunks:

• Spotkajmy się
• na rynku
• o siódmej