Nine texts that use the term "sabbath days"

If all agree that the first eight texts refer to the weekly Sabbath, why should they interpret the ninth instance differently?

1. Or have ye not read in the law, how that on the sabbath days the priests in the temple profane the sabbath, and are blameless? Matthew 12:5
2. And, behold, there was a man which had his hand withered. And they asked him, saying, Is it lawful to heal on the sabbath days? that they might accuse him. Matthew 12:10
3. How much then is a man better than a sheep? Wherefore it is lawful to do well on the sabbath days. Matthew 12:12
4. And he saith unto them, Is it lawful to do good on the sabbath days, or to do evil? to save life, or to kill? But they held their peace. Mark 3:4
5. And came down to Capernaum, a city of Galilee, and taught them on the sabbath days. Luke 4:31
6. And certain of the Pharisees said unto them, Why do ye that which is not lawful to do on the sabbath days? Luke 6:2
7. Then said Jesus unto them, I will ask you one thing; Is it lawful on the sabbath days to do good, or to do evil? to save life, or to destroy it? Luke 6:9
8. And Paul, as his manner was, went in unto them, and three sabbath days reasoned with them out of the scriptures, Acts 17:2
9. Let no man therefore judge you in meat, or in drink, or in respect of an holyday, or of the new moon, or of the sabbath days: Colossians 2:16