When to get up on Shabbos?
Question
I heard that one should pray later than usual on Shabbos.
Answer
Dear …!
The Remo (commentary to the Shulchan Oruch) does indeed mention that, since the daily sacrifice tomid was brought later on Shabbos morning than on a weekday morning, there is a point in praying a little bit later on Shabbos. However, practically, the Mishnah Berurah writes that it’s preferable to pray vasikin (that is, to begin the shmone esre prayer when the first rays of the rising sun become visible over the horizon), and also that one still has to abide by the times of reciting the Shema and the shmone-esre prayer. Because of this, in most places where there are several minyans (prayer quorums), these are scheduled according to the halachic times, vasikin, the first (more stringent) time for reciting the Shema and the second (more lenient) time for reciting the Shema, so that the congregants will finish reciting Shema before the end of the requisite time, and then there are minyans that, unfortunately, do not fulfill this requirement. A person who is normally stringent and prays according to the first time for reciting the Shema should not be more lenient on Shabbos and recite the Shema according to the more lenient opinion. Therefore, practically, there is little difference between a Shabbos and a weekday, since there isn’t much room for variation. However, in Northern countries outside the Land of Israel, where the times for reciting the Shma in the summer are very long, the difference between a Shabbos and a weekday prayer time could be much more significant.
Source
Shulchan Oruch, section Orach Chaim, chapter 281, §1; Mishnah Berurah, ibid., subsections 1, 5