Do Christians have liberty to disagree about observing special days?
Yes. One person may establish one day, while another says all days are alike. That difference is the liberty of the Christian faith. Christians are therefore free to disagree about observing special days; this is presented as a matter of Christian liberty rather than a requirement of uniformity.
Les explains that within the Christian faith there can be differing practices regarding special days. One believer may choose to establish a particular day, while another believer regards all days as alike. He calls this the liberty of the Christian faith, indicating that such differences are permitted rather than forbidden, and that believers are not required to agree on this point.