In theory yes but you have to do it in advance.
Let's say you wanted the Pokemon on Friday. You would need to skip the day forward on Wednesday to get the Pokemon one day earlier, Tuesday to get two days earlier, and so on and so forth. This is because changing the ds clock stops all time based events for 24 hours. So on Wednesday, you skip your day forward to Thursday, wait 24 hours and then your Pokemon will be available. You will always skip to Thursday.
Hope I helped!