For days of the week, I used this song:
(to the tune of Frere Jacques)
Days of the week,
Days of the week,
Sing with me,
Sing with me.
Sunday, Monday, Tuesday
Wednesday, Thursday, Friday
Saturday
A day to play.
With time, I found it helped to focus on the minutes hand only first (5 past, 10 past, 15 past, etc). Then go onto the hour hand.
I found it worked to only bring in the terms like quarter past, quarter to, half past once the rest was solid as I think it's these terms that confuse. So once the 15 minutes past 2 was solid, only then I'd say, "And by the way, 15 minutes past has a special name, we call it quarter past because it is a quarter of the clock." etc