Vores afgang er klokken syv, så min søster pakker sin taske allerede nu.

Afgang means departure, especially a scheduled one. You often see it with transport, timetables, flights, trains, buses, ferries, and similar situations.

So vores afgang sounds like our departure / the time we leave. It is correct Danish, but it can sound a bit more formal or timetable-like than everyday speech. In casual conversation, many Danes might also say something like Vi tager af sted klokken syv or Vi skal af sted klokken syv.

In modern everyday Danish, vores is the normal word for our before all nouns:

• vores afgang
• vores hus
• vores venner

The forms vor, vort, and vore do exist, but they sound formal, literary, old-fashioned, or poetic to many speakers. So for a learner, vores is the safe everyday choice.

Danish often uses the present tense for fixed future events, especially schedules and arrangements.

So Vores afgang er klokken syv is natural Danish for a planned, fixed departure time. English does something similar sometimes too, as in The train leaves at seven.

In other words, the present tense in Danish can cover:

• present facts
• ongoing situations
• scheduled future events

Yes. Klokken syv is the normal way to give a clock time in Danish.

So:

• Mødet er klokken otte = The meeting is at eight.
• Vores afgang er klokken syv = Our departure is at seven.

Notice that Danish does not need a separate word matching English at here. The time expression klokken syv works directly.

Also, do not confuse:

• Klokken er syv = It is seven o’clock.
• Afgangen er klokken syv = The departure is at seven o’clock.

Danish has no separate tense form that works exactly like the English present progressive is packing. Instead, the simple present pakker can cover several English meanings, depending on context:

• packs
• is packing
• sometimes even will pack

Here, because of allerede nu and the context, pakker is understood as something like is already packing now.

Danish uses sin/sit/sine when the possession belongs to the subject of the same clause.

Here the subject is min søster, so if the bag is her own bag, Danish uses sin taske:

• Min søster pakker sin taske = My sister is packing her own bag.

If you say hendes taske, it usually means the bag belongs to some other female person, not the subject:

• Min søster pakker hendes taske = My sister is packing her bag, but the bag belongs to another woman.

This is a very important difference in Danish.

Because taske is a common-gender singular noun, so the correct form is sin.

The reflexive possessive changes to match the noun:

• sin
  • common-gender singular noun: sin taske
• sit
  • neuter singular noun: sit hus
• sine
  • plural noun: sine bøger

So the form depends on the noun being possessed, not on the owner.

Allerede means already, and nu means now. Together, allerede nu adds emphasis: already now, already at this point, or as early as now.

It suggests that the action is happening sooner than you might expect.

So:

• Min søster pakker allerede = My sister is already packing.
• Min søster pakker allerede nu = My sister is already packing now / already at this point.

The second version sounds more immediate and emphatic.

Here så means so, and it is functioning as a coordinating conjunction linking two main clauses:

• Vores afgang er klokken syv, så min søster pakker sin taske allerede nu.

Because of that, the second clause keeps normal main-clause order with the subject before the verb:

• min søster pakker

But if så is used as a fronted adverb at the beginning of a clause, Danish main-clause word order requires inversion:

• Så pakker min søster sin taske.

So both patterns exist, but they are used in slightly different structures:

• conjunction så: så min søster pakker
• fronted adverb så: Så pakker min søster