Well, the next day was Saturday, the day before Easter Sunday.
4 seconds sound clip from the The First Easter Rabbit (1976) movie soundboard.
You can hear this line at 00:17:11.860 in the Blu-ray version of the movie.
Quote context
[...]
- Don't cry, mother. Who needs silly old parades, anyway?
- It's that tree down there. It must be hollow.
- Ooh-Ooh, that's the way into Easter valley. I'm sure of it.
- Excellent, Bruce. Excellent. Heh heh heh.
- Tomorrow, Bruce, tomorrow will be the end, the end of Easter Valley!
- Well, the next day was Saturday, the day before Easter Sunday.
- I think we shall have a white Easter, if my eyes do not deceive me.
- Hey, look. It's beginning to snow. Yeah, it's really coming down.
- Now... now I've got it all. Heh heh heh. The valley and the golden lily are mine.
- Gee, Zero, are you just gonna leave 'em snowed in like that?
- Ooh-Ooh, they may never get out.
[...]