The phrase "same time every night" means that something happens or is done at the same specific time each day, consistently and regularly. Full definition
Another common sleep problem that athletes have is waking up at the exact same time every night. (sock-doc.com)
He goes to bed around the same time every night and wakes up on his own in the morning. (nutritionnaire.com)
Nope, in the United States, the Olympics are about the Americans who are willfully corralled in front of the TV at the same time each night to watch handpicked coverage of how great their countrymen are doing in sports they pay attention to once every 206 weeks. (sbnation.com)