Place this divider at P. 912 at the start of the day.
Move this tab from Terce, to Sext, and to None during the day if you say the Little Hours, the short daytime offices prayed after Lauds (Morning)and before Vespers (evening).
Typically, I try to say the Little hours at 9:00 am, Lunch time, and 3:00 pm.
These are the most difficult hours for me to pray. My best days are when I stop work and pray the Little Hours -- wonderful and always a blessing.