Hi Masashi, it looks like this text is from an old English story. Am I correct? Since I don't know the context of the story or where the characters are or what they're doing, I'm going to make my best guess. Are the two sentences related? Is the same character saying both sentences?

It sounds like there are a group of people working outside and it's late at night. In the first sentence, the person is saying that it's close to 10pm (22:00) they've been working all day. They still have a lot of work left to do and he thinks they'll be working until 1 or 2 o'clock in the morning. In the second sentence, the character is saying that while it's still dark outside, they should all go home and get some sleep before morning comes and they have to get up and go back to work again. 

Does this make sense to you?

I don't think either of these examples sound like older-style English. However, we need the proper quote - your version has a grammar mistake, and that changed the whole meaning of the line.

"Such an odd feeling, isn't it? I mean what are we now, getting on to ten - may very well be here till, what, one, one-two? Making the laws of the land, while the land we're doing it for is dark outside, popped off to bed."

The first part refers to the time. It's almost ten o'clock, and the speaker expects to be working until one o'clock, or even two in the morning.

The second part is a play on words, but it means while they are working to benefit everyone else in the country, everyone else is sleeping.

Hi Brittany, thank you for replying, These sentences I asked above is in a script 'THIS HOUSE'  published in 2013 but the story is about political election about between 1974-79, so it can be old English. 

I couldn't imagine they both have such a meaning.

your guess is fantastic and very understandable! I can solve them thanks to your help!

Thank you!!