Der Zeitpunkt steht in der Vorladung.

Zeitpunkt means a specific point in time—for example, a particular date or moment.
By contrast, Zeit is much broader and can mean time in general.

So in this sentence, der Zeitpunkt is used because it refers to the specific scheduled time mentioned in the document.

• der Zeitpunkt = the specific time / point in time
• die Zeit = time in general

Yes, the basic meaning of stehen is to stand, but in German it is also very commonly used to mean to be written or to appear in writing.

So:

• Der Zeitpunkt steht in der Vorladung.
  = The time is stated in the summons.

This is a very normal use of stehen in German when talking about information in texts, letters, notices, or forms.

For example:

• Das steht im Brief. = That is written in the letter.
• Die Adresse steht auf dem Formular. = The address is on the form.

Because in takes different cases depending on meaning:

• dative for location: in der Vorladung = in the summons
• accusative for movement into something: in die Vorladung = into the summons

Here there is no movement. The information is located inside the document, so German uses dative:

• in der Vorladung

Since Vorladung is feminine, its dative singular form is der Vorladung.

Because German articles change according to gender, case, and number.

In this sentence:

• der Zeitpunkt
  Here der is the nominative masculine form of the, because Zeitpunkt is masculine and is the subject.

• in der Vorladung
  Here der is the dative feminine form of the, because Vorladung is feminine and follows in in a location sense.

So the same word der can represent different grammatical forms.

A few clues help:

1. The verb agrees with it
   The verb is steht, which is singular, and der Zeitpunkt is singular.

2. It is in the nominative case
   der Zeitpunkt is nominative masculine, which is the typical form for the subject.

3. The meaning fits naturally
   The sentence is saying that the time is written in the summons.

So:

• der Zeitpunkt = subject
• steht = verb
• in der Vorladung = prepositional phrase

Vorladung usually means a summons, especially an official order to appear somewhere, such as in court or at a police station.

Depending on context, English translations may vary a little:

• summons
• official notice to appear
• sometimes subpoena in legal contexts, though that is not always a perfect one-to-one match

So the sentence suggests that the specific scheduled time is written in that official notice.

Grammatically, ist in der Vorladung is possible, but it sounds less natural for the idea is written/stated in the document.

German strongly prefers stehen when talking about information appearing in writing.

Compare:

• Der Zeitpunkt steht in der Vorladung. = natural
• Der Zeitpunkt ist in der Vorladung. = more like The time is in the summons, which is understandable but less idiomatic

So steht is the better choice here.

Yes. This is a standard German main-clause pattern:

• Der Zeitpunkt = first element
• steht = finite verb in second position
• in der Vorladung = remaining information

German main clauses normally put the conjugated verb in second position.

So this sentence follows the very common pattern:

Subject + verb + other elements

Yes, absolutely. That would mean:

• The exact time is stated in the summons.

Here, genaue is an adjective modifying Zeitpunkt.

Because Zeitpunkt is masculine singular and follows the definite article der, the adjective takes the ending -e:

• der genaue Zeitpunkt

No. Zeitpunkt means a specific point in time, but that can be:

• a clock time
• a date
• a moment
• a stage in a process

For example:

• zu diesem Zeitpunkt = at this point in time
• ein günstiger Zeitpunkt = a good time / a favorable moment

In your sentence, the exact meaning depends on context. It could mean the hearing time, appointment time, or scheduled date/time mentioned in the summons.

A very natural English rendering would be one of these:

• The time is stated in the summons.
• The date and time are given in the summons.
• The exact time is listed in the summons.

Even if the German uses singular Zeitpunkt, English often prefers a slightly more flexible translation depending on context.