Program začne zítra.

The dictionary form is začít, meaning to begin / to start.

In Program začne zítra., začne is the 3rd person singular form, used with program = it. So literally it is program starts / will start.

A useful thing to know is that začít is a perfective verb. In Czech, perfective verbs use present-tense endings, but they usually refer to the future. So začne is formally a present-form verb, but its meaning here is will start.

Because Czech often expresses the future without a separate word like English will.

With perfective verbs such as začít, the present-form endings already give a future meaning:

• začnu = I will start
• začneš = you will start
• začne = he/she/it will start

So Program začne zítra. naturally means The program will start tomorrow.

If you are thinking of English structure, Czech is doing the future inside the verb form itself.

This is mainly about aspect.

• začít = perfective = to start/begin as a completed event
• začínat = imperfective = to be starting, to start repeatedly, to be in the process of starting

In this sentence, the speaker is referring to a single future beginning, so začne fits very well.

Compare:

• Program začne zítra. = The program will start tomorrow.
• Program začíná zítra. = also possible in some contexts, often more like The program starts tomorrow as a scheduled event

So both can appear in real life, but začne strongly presents the beginning as a single event that will happen.

Program is in the nominative singular.

It is the subject of the sentence — the thing that will start.

A few useful details:

• program is a masculine inanimate noun
• here it is singular
• it matches the singular verb form začne

So the structure is basically:

• program = subject
• začne = will start
• zítra = tomorrow

Because Czech has no articles.

English distinguishes between:

• a program
• the program

Czech usually does not mark that difference with a separate word. The listener understands it from context.

So Program začne zítra. could mean:

• The program will start tomorrow
• sometimes, depending on context, A program will start tomorrow

In most real situations, context makes the intended meaning clear.

Zítra is an adverb, meaning tomorrow.

It answers the question when? and it does not decline like a noun. In this sentence it stays just zítra.

So:

• dnes = today
• zítra = tomorrow
• včera = yesterday

These are very common time adverbs in Czech.

Yes. Czech word order is more flexible than English.

The neutral order here is:

• Program začne zítra.

But you could also say:

• Zítra začne program.

That puts more focus on tomorrow.

In many cases, Czech word order changes the emphasis or information structure, not the core meaning. Because the grammar is shown by endings more than by position, Czech can move words around more freely than English.

Still, Program začne zítra. is a very natural, straightforward sentence.

A simple approximate pronunciation is:

PRO-gram ZA-chneh ZEE-tra

More precisely:

• program ≈ PRO-grahm
• začne ≈ ZA-chneh
• zítra ≈ ZEE-tra

A few pronunciation notes:

• Czech stress is usually on the first syllable of each word.
• č sounds like ch in church
• í is a long ee sound
• z is like English z

So the whole sentence is roughly:

PRO-gram ZA-chneh ZEE-tra

Usually yes — it is a very close cognate.

Program in Czech can mean things like:

• a program / programme of an event
• a plan or schedule
• a computer program
• a TV or radio program

The exact meaning depends on context. In a sentence like Program začne zítra., it often means something like the program/event/course/schedule begins tomorrow, but context decides the most natural English translation.

Because Czech verb forms often do not show gender in the present/future like this — začne can mean:

• he will start
• she will start
• it will start

The subject tells you which one is meant.

Here the subject is program, which is a thing, so in English we translate it as it:

• Program začne zítra. = The program will start tomorrow.

So the noun in the sentence gives you the meaning.