at this night vs in this night

Some examples from the web:

• All old hands, and tops at this night stuff.
• I also welcome the Secretary-General who is in the gallery for the first time, I believe, at this night sitting on two reports.
• Then he humbly sued that, upon peril of body and life, he might be present at this night's supper, being in good hopes to spye out the offender and obtain his wished freedom.
• I watched him for 15 years, sitting in a room, staring at a wall not seeing the wall, looking past the wall looking at this night, inhumanly patient.
• Look at, this night, all goes very quickly and we are happy.
• She would secretly look at this photo at night and cry.
• Someone will be at this number night or day.
• Six locations and counting, we could be at this all night.
• We're doing this night at a club in Hollywood beach, amazing.
• Well, at this hour at night, we'll do sooner going on foot.
• I can't replace you at this time at night, and I need a support.
• He's been at this all night.
• Wilfred, we've been at this all night.
• We've been at this all night.
• You been at this all night?
• You guys, I've been at this all night, and I haven't learned a thing.
• I had a few beers at this party last night.
• No one would visit here at this hour of night.
• Well, you use this at night.
• I thought that at this time of night you'd be sleeping.

Some examples from the web:

• He may still be of use to you in this night's great business.
• Yes, in this night filled with sacred memories, our trust in the redemptive power of the Word made flesh is confirmed.
• Later in this night bus later there would be, all this could occur.
• You believe in this night, don't you?
• In this long nighttime event, in this night of walking, think about your life.
• In spite of all, in this night of darkness and heavy senses, being myself seemingly far away from You, I offer to You my heart, my little sacrifices, my poor efforts and every drop of my blood shed for my own purification.
• Why not you in this city and in this night so like other cities and other nights you can hardly tell the difference?
• Out in this night, this dire night.
• In this night, nothing has happened in vain.
• In this night there are lots of tourists and locals and you can spot some good dancers and also a lot of students who show want they have learned during the classes.
• In this night, as the spirit of darkness enfolds the world, there takes place anew the event which always amazes and surprises us: the people who walk see a great light.
• In this night and in this hour,
• What happens in this night?
• But this spiritual night, which is faith, deprives the soul of everything, both as to understanding and as to sense.And for this cause the soul in this night says that it was journeying 'in darkness and secure,' which it said not in the other.
• You will be mine in this night of darkness.
• While I was at university, I would often come and have dinner in this night market after class.
• But in a little while? You have to go on living and, in the eyes of others, act as if everything is normal again. That's why I want to write down all of this for you in this night.
• The watch at cemetary in the night between the 1 and 2 November. In this night groups of persons watch at cemetary and they say the rosary to the dead.
• In this night photo all the light was coming from Klyp+ LED light, which was used to illuminate the scene from the right side.
• I'm not involved in this night.