Learn Italian: Il treno oggi è in orario. - The train is on time today.

In English we say "on time", but in Italian the set phrase is in orario. The word orario translates to "schedule" or "timetable", so you are literally saying the train is "in schedule" or "on schedule".

Can I change the position of oggi in this sentence?

Yes! Time words like oggi are very flexible in Italian. You could put it at the beginning (Oggi il treno è in orario) or at the end (Il treno è in orario oggi) without changing the meaning.

How would I apply this lesson's grammar to say "Every train is on time today"?

You would use ogni followed by the singular noun, with no article: Ogni treno oggi è in orario. If you wanted to say "All the trains", you would use tutti followed by the plural article and noun: Tutti i treni oggi sono in orario.

What if the train is late instead of on time?

You would use the phrase in ritardo (delayed or late). Just like in orario, it uses the preposition in. The sentence would simply become: Il treno oggi è in ritardo.