It was exceedingly frustrating to be the type of person who relied quite a bit on logic to be immersed in a world where logic didn't present itself openly. It certainly did not help that Remus was coming from a place in his life where logic was nowhere to be found anyway given the circumstances surrounding him and everything that happened with his loved ones in the aftermath of the war. In short, Remus was a little agitated. He'd been keeping track of time, figuring out as best he could that days seemed to still be passing in twenty-four hours increments. The issue wasn't the hours. It was the calendar.
Upon his arrival, Remus was coming off recovering from the full moon. Looking at the sky at night during his time in this world -- Starklandia, as he understood it -- he'd been looking at the moon's phases and it appeared that the current phase was approaching the full. He could feel it in his body, too, which was not exactly convenient when he was still trying to figure things out, adjust, cope with the fact that he was finally back in the presence of the most important person in his life who in fact did not indirectly cause the deaths of his other three friends. ...Merlin, Remus was on the verge of becoming overwhelmed just within his inner thoughts.
He was thankfully drawn out of his head by not only the sound of Sirius' voice, but also his toe jabbing at him. "Oi, you," he said, but gave his foot an affectionate pat. Remus shifted around to sit next to Sirius and had to take a few seconds to himself to process the fact that this was actually happening. "I can't blame you for needing attention. I spoiled you with head scratches years ago." He reached up and brushed a bit of that soft dark hair with his fingers. As much as it helped Sirius to get attention, it relaxed Remus to give it to him.