1)
What is "Netos ha'Yom"?
1.
Radak: It is when the sun is Noteh (leans) to the west. 'Day' is as long as the sun is above the ground.
2)
Yesterday (verse 6), they ate and drank. Why now did they only eat?
1.
Malbim: Yesterday, they finished to eat and drank in the morning, but his father-in-law told him to stay, because traveling befuddles one who drank. Today her husband was careful not to drink, just the meal lasted until late in the day.
