How about on shabbos?
Same thing, at least in regards to Krias Shema. Sof Zman tefila and Sof Zman Krias Shema are not the same thing (unless you go with Kamarna shita that Sof Zman Krias Shema is also drabanan (he says that and the shois zmanius part only for bdieved, lkatchila everyone should conduct themselves according to the MA Zman).