Today is a red-letter day for us.

Remembrance Day is observed on the second Sunday of November.

I go for a run every single day.

Vernal Equinox Day is a national holiday in Japan.

The dog days of summer are always so hot and humid.

I remember my salad days when I was young and inexperienced.

I will visit you one of these days.

I will finish the project in a few days.

In days of yore, people used to travel by horse and carriage.

Back in the days, people used to communicate through letters.