I sure hope you aren't going to Church on Saturday.
Exodus 16:29 (NIV)
29 Bear in mind that the LORD has given you the Sabbath; that is why on the sixth day he gives you bread for two days. Everyone is to stay where he is on the seventh day; no one is to go out."
Exodus 20:10 (NIV)
10 but the seventh day is a Sabbath to the LORD your God. On it you shall not do any work, neither you, nor your son or daughter, nor your manservant or maidservant, nor your animals, nor the alien within your gates.
Now you can read that any way you want, but nowhere does is say Saturday is the sabbath, yes it was for the Jews, that's the day they picked. Most of us Protestants and Catholics picked Sunday, but we are all sinning because we drive to church on our sabbath (day of rest).
Notice in 20:10 is says A sabbath day. Now what calendar was used during the writing of Exodus? The idea of a sabbath day is a day we set aside to worship, rest, and seek the Lords guidance.