irgendwann mal in English:

Someday you'll regret this.

Despite Trang's constant affirmations of love, Spenser is still afraid someday she will fall out of love with him.

All these books will be worth their weight in gold someday.

The bearded god had promised to return someday in the same way he had left.

I wouldn't have thought I would someday look up "Viagra" in Wikipedia.

It is inevitable that I go to France someday, I just don't know when.

We will someday make the world a better place.

In Belgium, Flemish people want to declare their independence someday.

Someday someone will stand on the Martian landscape and take a picture of Earth in the night sky.

Even these words will someday disappear.

The helicopter is so useful that someday it may take the place of cars and trains.

Someday, dear language learner, you must stop poring over IPA charts and start listening to people.

In a cruelly ironic twist of fate, someday Tatoeba will make an example of us all.

I couldn't say when exactly in my life it occurred to me that I would be a pilot someday.

Do you think mankind will someday colonize the Moon?