هشتغل يوم التلات.

A common Egyptian Arabic pronunciation is:

hashtaghal yōm et-talāt

A slightly more detailed breakdown:

• هشتغل = hash-ta-ghal / hash-taghal
• يوم = yōm
• التلات = et-talāt

Notes:

• The ت in التلات is doubled in pronunciation because ت is a sun letter, so the l of الـ is not pronounced.
• Some speakers use حـ and some use هـ for the future, so you may also hear a form like haشتغل / hashtaghal.

The هـ is a future marker in Egyptian Arabic. It means the verb is talking about something that will happen.

So:

• بشتغل = I work / I’m working
• هشتغل = I will work

In Egyptian Arabic, the future is often made with هـ or حـ before the verb.

Because Arabic verbs already show the subject.

In هشتغل, the form itself tells you the subject is I. So أنا is optional.

You can say:

• هشتغل يوم التلات = natural, normal
• أنا هشتغل يوم التلات = also correct, but more emphatic or contrastive

For example, adding أنا can sound like:

• I’m the one who will work on Tuesday
• As for me, I’ll work on Tuesday

It comes from the verb اشتغل.

In Egyptian Arabic, اشتغل means:

• to work
• to be employed
• sometimes to function / operate, depending on context

In this sentence, it means to work.

Related forms:

• بشتغل = I work / I’m working
• هشتغل = I will work
• اشتغلت = I worked

يوم means day, and here it helps specify on Tuesday.

So:

• يوم التلات = on Tuesday / Tuesday

In Egyptian Arabic, this is a very common way to talk about days:

• يوم الحد = on Sunday
• يوم الاتنين = on Monday
• يوم التلات = on Tuesday

It sounds natural and conversational.

Yes, often you can.

Both are possible:

• هشتغل يوم التلات
• هشتغل التلات

The version with يوم can sound a little fuller or clearer, but both are natural in Egyptian Arabic.

Very roughly:

• التلات = Tuesday
• يوم التلات = on Tuesday

Because this is Egyptian Arabic, not Modern Standard Arabic.

In Egyptian Arabic, Tuesday is commonly:

• التلات

In Modern Standard Arabic, it is:

• الثلاثاء

Egyptian Arabic often uses shorter, more colloquial forms for the days of the week.

Also, التلات is related to the number three, because Tuesday is historically the third day in that naming pattern.

Because التلات here is the name of the day, not just the ordinary number three.

Compare:

• ثلاثة / تلاتة = three
• التلات = Tuesday

In Egyptian Arabic, the weekday names have their own fixed forms, and they are not always identical to the plain number forms.

It is Egyptian Arabic.

Clues:

• هشتغل is colloquial Egyptian-style future
• التلات is the Egyptian word for Tuesday

A Modern Standard Arabic version would be something like:

• سأعمل يوم الثلاثاء or
• سأشتغل يوم الثلاثاء

So the original sentence is natural spoken Egyptian Arabic.

It can cover both, depending on context.

Egyptian Arabic does not always make the same tense distinctions that English does. So هشتغل can mean:

• I will work
• I’ll be working

The exact English translation depends on the situation.

For example:

• If someone asks about your schedule, هشتغل يوم التلات could naturally mean I’ll be working on Tuesday.
• In a simpler statement about a future plan, it can be I will work on Tuesday.

Because ت is a sun letter.

With sun letters, the l sound of الـ is not pronounced. Instead, the following consonant is emphasized or doubled.

So:

• written: التلات
• pronounced: et-talāt

This is the same pattern you see in many Arabic words with الـ before sun letters.