शनिवार को फिल्म, रविवार को पार्क।

This is a very common kind of elliptical Hindi expression: words that are easy to guess are simply left out.

A fuller version could be something like:

• शनिवार को फिल्म देखेंगे, रविवार को पार्क जाएँगे।
• शनिवार को फिल्म, रविवार को पार्क चलेंगे।

But in short, list-like speech, Hindi often drops the verb when the meaning is obvious from context. It feels a bit like English notes such as:

• Saturday: movie. Sunday: park.

So yes, it is natural Hindi, especially in casual speech, planning, captions, or short messages.

Here को marks time, especially with days and dates. In this sentence:

• शनिवार को = on Saturday
• रविवार को = on Sunday

This use of को is very common with specific points in time:

• सोमवार को = on Monday
• शाम को = in the evening
• एक बजे को is not natural, but एक बजे works without को

So in this sentence, को is not an object marker. It is marking the day as the time when something happens.

Usually, that would sound incomplete or unnatural.

With days of the week, को is the normal and expected choice:

• शनिवार को
• रविवार को

In very casual headings or notes, people sometimes drop things, but for a learner, it is much better to keep को with days.

So:

• शनिवार को फिल्म, रविवार को पार्क। = natural
• शनिवार film, रविवार park type structure without को = not the standard form you should learn first

Because this sentence is functioning like a plan list rather than a fully expanded sentence.

The nouns फिल्म and पार्क are shorthand for larger ideas:

• फिल्म = watch a movie / go for a movie
• पार्क = go to the park

Hindi often allows this kind of shortening when the situation is clear. A speaker does not need to spell out every part.

If you wanted to make it explicit, you could say:

• शनिवार को फिल्म देखेंगे, रविवार को पार्क जाएँगे।
• शनिवार को फिल्म देखना है, रविवार को पार्क जाना है।

So the bare nouns are not random; they stand for the planned activity.

Yes, there is an implied verb, but the exact verb depends on context.

For फिल्म, the hidden idea might be:

• देखना = to watch
• sometimes चलना or जाना if the idea is going out to see a movie

For पार्क, the hidden idea is more likely:

• जाना = to go
• sometimes चलना in conversational planning

So the sentence does not point to just one single missing verb. It relies on the listener to supply the natural activity:

• शनिवार को [फिल्म देखेंगे]
• रविवार को [पार्क जाएँगे]

That flexibility is one reason this short style works well.

Hindi commonly puts the time expression first, then the rest of the information.

So the pattern here is:

• [time] + [activity]
• शनिवार को + फिल्म
• रविवार को + पार्क

This is very natural in schedules, plans, and spoken organizing. It is similar to saying:

• On Saturday, movie. On Sunday, park.

Could you rearrange it? In a full sentence, yes, but this order is the cleanest and most natural for a short plan.

It is closer to a note, plan, caption, or spoken shorthand than a fully expanded textbook sentence.

That does not mean it is wrong. It is perfectly normal in the right context, such as:

• making weekend plans
• texting
• writing a schedule
• speaking casually

Think of it as compressed Hindi. In formal writing, or if you want to practice full grammar, you would normally expand it.

Yes, but it changes the feel a little.

Original:

• शनिवार को फिल्म, रविवार को पार्क।

This feels like a neat list or schedule.

With और:

• शनिवार को फिल्म और रविवार को पार्क।

This is possible, but it still feels somewhat incomplete unless the context is clear. In a fuller sentence, और works more smoothly:

• शनिवार को फिल्म देखेंगे और रविवार को पार्क जाएँगे।

So the comma version is especially natural for short planning-style speech.

Because फिल्म here is being used as a general activity label, not necessarily to emphasize number.

It works like saying:

• Saturday: movie rather than
• Saturday: movies

Even if in real life you might watch one movie or go to the cinema, the singular noun is a natural shorthand.

If you said फिल्में, that would sound more like movies in the plural, which is a different nuance.

So फिल्म here is the normal compact choice.

Yes, very common.

Hindi often drops words that are easy to understand from context, especially in:

• plans
• reminders
• menus
• headlines
• chat messages
• spoken conversation

For example, people may say things equivalent to:

• सुबह ऑफिस, शाम को जिम।
• आज बाजार, कल डॉक्टर।

These are not full formal sentences, but they are very natural. So this example is useful because it shows how real Hindi often sounds outside of carefully complete textbook lines.