My dear friend, I do want to thank you for your very good question. While I do not believe that the Bible addresses this particular issue specifically, I will do my best to respond using Scriptures that I believe might be helpful in shedding light as to your question.

Now, my quick response is that I do not believe there is any restriction given in the Scriptures for Christians today in terms of when a wedding could be scheduled. For the sake of this response, I hope I am correct in assuming that you are considering some of the teachings and traditions of certain Christian denominations relating to “holy days” and other such observances, and in particular, the observance of Good Friday and Easter.

My dear friend, I do not believe that the NT teaches the following of a church calendar, nor the observance of the Jewish Sabbath, nor the observance of special “holy days” or other OT ordinances. In fact, there is only one day that Christians regard, and that is the Lord’s Day. And, to clear up any confusion that may exist, the Lord’s Day is technically not the Jewish Sabbath, which was given to the Jewish nation as a day of rest at the end of a week, or Saturday. The Lord’s Day is the first day of the week, or Sunday, and it corresponds to the day that the Lord Jesus rose from the dead.  It is also the day when the Lord Jesus appeared to His disciples in the upper room on that first day of the week, and again seven days later, this time appearing to all His disciples including Thomas who was missing on the previous week (John 20:19-29). Now, to be sure, the term “Lord’s Day” is only used once in Scripture, and that is in Revelation 1:10, but it is quite clear throughout the NT that the first day of the week is the day that Christians met for the “breaking of bread (Acts 20:7), and it remains the day in which Christians gather to worship the Lord. I do want to include the excellent description of the significance of the Lord’s Day from the Morrish Bible Dictionary because I believe it will help clarify any misconceptions as to our Sunday day of worship: “…It is the first day of the week, and is suggestive of the beginning of a new order of things, altogether distinct from that connected with the legal Sabbath. It was the day on which the disciples commonly came together for the express purpose of breaking bread (Acts 20:7); and though no legal enactment is given concerning it, it is a day specially regarded by Christians.” Again, I want to stress here that the Lord’s Day, is the only day set apart for the NT Christians that Scripture points to, and indeed, the NT specifically tells us that we are no longer to observe the ceremonial laws, observing special days or ordinances which were meant for Israel in OT times.

In Colossians 2:16 we read, “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…” To better understand the gist of Colossians 2, I would quote the MacDonald Bible Commentary as follows: “Once again the Apostle Paul is ready to make the application of what he has just been stating. We might summarize the foregoing as follows: The Colossians had died to all efforts to please God by the flesh. They had not only died, but they had been buried with Christ and had risen with Christ to a new kind of life. Therefore, they should be done forever with the Judaizers and Gnostics, who were trying to draw them back to the very things to which the Colossians had died. So let no one judge you in food or in drink, or regarding a festival or a new moon or sabbaths. All human religions place men under bondage to ordinances, rules, regulations, and a religious calendar. This calendar usually includes annual observances (holy days), monthly festivals (new moons), or weekly holidays (sabbaths). The expression “Therefore let no one judge you” means that a Christian cannot be justly condemned by others if, for instance, he eats pork, or if he fails to observe religious festivals or holy days. The Christian is not under such ordinances.” To expand on my assertion that the NT does not teach that Christians should follow the OT law and ordinances or observe special “holy days” in order to please God, you might consider Acts 15:24-29; Galatians 2:14-21; Galatians 6:12-15.

To summarize, I do not see any Scriptural evidence that a wedding should not occur on the day before Easter. Now, it is true that it was on a Sabbath day, a Saturday, that our Lord Jesus lay in a tomb after dying on the cross, and perhaps you might be thinking that because of this, a wedding would not be appropriate to this day. I believe that this would be a matter of personal conscience; but again, Christians today are not under law but of grace, and we are not bound to observe (or in this case avoid) any special “holy days”, but that we do in fact set aside the first day of the week for worship and the breaking of bread (communion).  (SF)  (584.4)