Després, decidim canviar el dia de la reunió.

Després means afterwards, later, or then. It works as a time adverb and sets the sequence of events.

So in Després, decidim canviar el dia de la reunió, it tells you that this happens after something else.

The comma after Després is common because it introduces the time frame for the rest of the sentence.

Catalan often leaves out subject pronouns when the verb ending already makes the subject clear.

Decidim means we decide, so the -im ending tells you the subject is we.

You could say nosaltres decidim, but it is usually unnecessary unless you want emphasis or contrast.

• Decidim canviar... = We decide to change...
• Nosaltres decidim canviar... = We decide to change... with extra emphasis on we

Decidim is the present indicative, first person plural, from decidir.

So literally it means we decide.

Depending on context, this present tense can sometimes sound natural in English as:

• we decide
• we decided (in a narrative sequence)
• we’re deciding in some contexts, though that is less likely here

In isolated grammar terms, though, it is simply present tense.

After decidir, Catalan normally uses a bare infinitive directly:

• decidir fer alguna cosa = to decide to do something
• decidir canviar = to decide to change

So decidim canviar is the normal structure.

Unlike English, which uses to change, Catalan does not add an extra preposition here:

• We decide to change
• Decidim canviar

Canviar is the infinitive of the verb to change.

Because it follows decidim, it expresses the action that was decided:

• decidim = we decide
• canviar = to change

So the structure is:

• decidim canviar... = we decide to change...

Literally, el dia de la reunió means the day of the meeting.

Breakdown:

• el dia = the day
• de = of
• la reunió = the meeting

Catalan often uses de where English uses of or sometimes a noun-noun structure.

So:

• el dia de la reunió = the day of the meeting
• in natural English, depending on context, this may also be understood as the meeting day or the date of the meeting

Catalan usually uses the definite article more often than English does.

So la reunió means the meeting, and de la reunió means of the meeting.

Even where English might sometimes drop the article, Catalan often keeps it:

• el dia de la reunió
• literally: the day of the meeting

This is completely normal Catalan structure.

In normal usage, canviar el dia de la reunió means to change the day on which the meeting takes place.

So yes, in practice it means to reschedule the meeting to another day.

Catalan expresses this very naturally through changing the day of the meeting rather than using a separate verb meaning reschedule in everyday speech.

The accents show stress and sometimes distinguish words.

• després has an accent on the final é, showing the stress falls there.
• reunió has an accent on the final ó, also showing final stress.

These accents are important in written Catalan and help with pronunciation.

Roughly:

• després sounds like des-PRES
• reunió sounds like reu-ni-O

Yes, but the given order is very natural.

Standard order:

• Després, decidim canviar el dia de la reunió.

You may also see:

• Després decidim canviar el dia de la reunió.
  The comma can be omitted in some contexts.

The core part decidim canviar el dia de la reunió is in a normal Catalan order:

• verb: decidim
• infinitive: canviar
• object: el dia de la reunió

Changing the order is possible for emphasis, but this version is the most straightforward for learners.

You could say:

Després, nosaltres decidim canviar el dia de la reunió.

This is grammatically correct, but usually less neutral. The subject nosaltres is only added when you want emphasis, contrast, or clarity.

For example:

• Ells no hi estaven d’acord, però nosaltres decidim canviar el dia de la reunió.

Without that special reason, Catalan normally prefers:

• Després, decidim canviar el dia de la reunió.