Balido ang promo hanggang bukas.

This is a very common Filipino sentence pattern: the predicate comes first, and the topic comes after it.

So in Balido ang promo hanggang bukas:

• balido = the predicate adjective, valid
• ang promo = the topic, the promo

A very literal breakdown is:

• Valid the promo until tomorrow

In more natural English: The promo is valid until tomorrow.

You can also say:

• Ang promo ay balido hanggang bukas.

That version is also correct, but the shorter predicate-first version is very common.

Ang is a marker that points to the topic of the sentence.

In this sentence:

• ang promo = the promo

It does not work exactly like English the, but in many simple sentences it can feel similar.

Here, ang tells you that promo is the thing being talked about.

Filipino often leaves out the verb to be in simple present-tense sentences.

So instead of saying something like The promo is valid, Filipino can simply say:

• Balido ang promo.

This is completely normal.

You will see this a lot with adjectives and identification sentences, for example:

• Mahal ang kape. = The coffee is expensive.
• Maganda ang lugar. = The place is beautiful.

Balido means valid, acceptable, or still in effect.

In this sentence, it means the promo is still good or usable up to a certain time.

It is a normal word, especially in:

• ads
• notices
• rules
• official-sounding statements

That said, many speakers also use the English word valid, especially in casual bilingual speech:

• Valid ang promo hanggang bukas.

That kind of code-switching is very common in the Philippines.

Promo is a shortened form of promotion.

In Filipino everyday use, promo usually means:

• a special offer
• a discount
• a limited-time deal
• a sales promotion

So ang promo here means the promotion / special offer.

Hanggang means until, up to, or as far as depending on the context.

In this sentence, it marks a time limit:

• hanggang bukas = until tomorrow

You can also see hanggang in other kinds of sentences:

• Hanggang dito lang. = Only up to here.
• Maghintay ka hanggang alas singko. = Wait until five o’clock.

In everyday use, hanggang bukas usually means tomorrow is the limit or it lasts until tomorrow.

But just like in English, the exact cutoff can be a little vague unless a specific time is given. In real-life promos, businesses often clarify with:

• a date
• a time
• hanggang bukas lamang = until tomorrow only
• hanggang 11:59 PM bukas = until 11:59 PM tomorrow

So the phrase gives the general deadline, but exact interpretation can depend on context.

Yes, bukas can mean tomorrow, and there is also a word spelled the same way in ordinary writing that relates to open.

In everyday writing, Filipino usually does not show accent marks, so context tells you the meaning.

Here, hanggang bukas clearly means until tomorrow, because hanggang is giving a time limit. Until open would not make sense here.

So the surrounding words usually remove the ambiguity.

You may hear hanggang sa in some sentences, but in this case hanggang bukas is the more standard and natural wording.

So:

• Balido ang promo hanggang bukas. = natural and concise

Using hanggang sa is more common in other structures, especially when followed by a longer phrase or clause. For this short time expression, just hanggang bukas is the safest choice.

It sounds very natural for:

• ads
• store notices
• text announcements
• customer service messages

It is not overly formal, but it does sound like something you would read on a sign or hear in a business context.

In very casual speech, people might also say things like:

• Valid pa ang promo hanggang bukas.
• Hanggang bukas na lang ang promo.

Those are also very common.

Yes. A few possible versions are:

• Balido ang promo hanggang bukas.
• Ang promo ay balido hanggang bukas.
• Hanggang bukas balido ang promo.
  This gives more emphasis to the time limit.

The first one is the most straightforward and natural for a simple statement.

So the word order can change somewhat, but the original sentence is a very standard way to say it.