Ever wondered about Shabbat being a remembrance of both Ma'aseh Bereshit and Yetsiat Mitsrayim? Here is an answer: there are two Kiddushim.
We see the Shabbat as the Yom Echad of Creation. Therefore it is natural, during Kiddush at the beginning of Shabbat, to emphasize Ma'aseh Bereshit, as we do. At the 15th hour, however, it becomes natural to emphasize Yetsiat Mitsrayim, as we do. Currently, this is about 11.00 in the morning. Shabbat Shalom!