at all hours

The church is to be open at other hours but these have not yet been set.

I got phone calls at all hours of the night.

We'd hear him drive in at all hours of the night.

Now they are called out at all hours of the night.

But she goes among them at all hours of the day and night.

His men were to return here at the 2nd hour.

All he could remember was at the hour of our death.

He is said to have died at the same hour as his wife.

The break out started at 2300 hours on 1 May.

And at 2 hours 41 minutes, quite a bit longer.