Em outubro, a empresa abre novas inscrições e mostra o calendário do próximo semestre.

Em is the preposition normally used for months in Portuguese, so Em outubro means in October.

A few quick comparisons:

• em outubro = in October
• em 2026 = in 2026
• em janeiro = in January

So this is a very standard time expression.

With months, Portuguese normally uses just em + month without an article:

• em outubro
• em maio
• em dezembro

You might see contractions like no, na, nos, nas when there is an article involved, but month names usually do not take one in this kind of expression.

Portuguese often omits subject pronouns when the verb form already makes the subject clear.

Here, the subject is explicitly stated as a empresa, so there is no need to add ela:

• a empresa abre
• a empresa mostra

In English, you must say the company opens / the company shows, but in Portuguese, once the noun subject is there, no pronoun is needed.

Portuguese often uses the present tense to talk about scheduled, regular, or planned future actions, much like English does in sentences such as The semester starts in October.

So:

• a empresa abre novas inscrições
• mostra o calendário

can naturally mean something like the company opens new registrations and shows/releases the calendar at that time.

This present tense gives the idea of a routine, scheduled, or official action.

Inscrições usually means registrations, enrollments, sign-ups, or applications, depending on context.

In this sentence, abre novas inscrições most likely means:

• opens new registrations
• opens enrollment
• starts accepting applications/sign-ups again

So inscrição is the act of signing up or registering for something.

Because novas must agree with inscrições in gender and number.

• inscrição = singular, feminine
• inscrições = plural, feminine

So the adjective must also be plural feminine:

• nova inscrição = new registration
• novas inscrições = new registrations

This kind of agreement is very important in Portuguese.

Portuguese nouns have grammatical gender.

• a empresa is a feminine noun
• o calendário is a masculine noun

That is why the articles are different:

• a = feminine singular
• o = masculine singular

This does not mean the objects are literally feminine or masculine in real life; it is just part of the grammar.

It can be literally calendar, but in many educational or administrative contexts it often means a schedule of important dates, academic calendar, or timeline.

So mostra o calendário do próximo semestre probably means the company shows or publishes the schedule/dates for the next semester.

Because de + o contracts to do in Portuguese.

So:

• de + o = do
• de + a = da
• de + os = dos
• de + as = das

That means:

• o calendário do próximo semestre literally comes from
• o calendário de o próximo semestre

But the contracted form do is the correct natural one.

In Portuguese, many adjectives can come after the noun, but some are very commonly placed before it, especially when they help define or classify the noun in a familiar way.

Próximo often appears before the noun in time expressions:

• o próximo semestre = the next semester
• a próxima semana = next week
• o próximo mês = next month

So do próximo semestre is the normal phrasing here.

Usually it means the upcoming semester relative to the moment being discussed.

In this sentence, the most natural reading is:

• In October, the company opens new registrations and shows the calendar for the next semester.

So if October is when this announcement happens, próximo semestre refers to the semester that comes after that point.

Context decides the exact time reference, but próximo generally means next/upcoming.

Portuguese often leaves out the article when speaking in a more general or indefinite way.

So:

• abre novas inscrições

sounds like

• opens new registrations / opens a new registration period

If you said abre as novas inscrições, that would sound much more specific, as if both speaker and listener already knew exactly which registrations were being referred to.

Grammatically, yes, mostra means shows. But depending on context, a more natural English translation might be:

• shows
• displays
• publishes
• releases
• announces

For example, if this is about an academic or business process, mostra o calendário might idiomatically mean publishes the calendar.

So shows is the direct meaning, but context may suggest a smoother English wording.

In Brazilian Portuguese, inscrições is approximately:

een-skree-SOYNS

A few helpful points:

• the ending -ções is very common and sounds roughly like -soyns
• the stress is on the last syllable before that nasal ending: -ções
• the ç sounds like s

So words like:

• inscrições
• informações
• opções

share a similar ending sound.

Yes. Because it uses the present tense and starts with a time expression, it can sound like a scheduled recurring action or a standard procedure.

So it may suggest something like:

• every year, in October, the company opens registrations and releases the next semester’s calendar

Whether it is a one-time future event or a habitual institutional action depends on the broader context. The grammar allows either reading, though a routine interpretation is very natural.