Blessed are those who remember to observe the Passover dinner (Lord’s Supper) on the fourteenth day of the first month at evening (start of the day)

[Luke 22:14-23] When the hour had come, He sat down, and the twelve apostles with Him. Then He said to them, “With fervent desire I have desired to eat this Passover with you before I suffer; for I say to you, I will no longer eat of it until it is fulfilled in the kingdom of God.” Then He took the cup, and gave thanks, and said, “Take this and divide it among yourselves; for I say to you, I will not drink of the fruit of the vine until the kingdom of God comes.” And He took bread, gave thanks and broke it, and gave it to them, saying, “This is My body which is given for you; do this in remembrance of Me.” Likewise He also took the cup after supper, saying, “This cup is the new covenant in My blood, which is shed for you. But behold, the hand of My betrayer is with Me on the table. And truly the Son of Man goes as it has been determined, but woe to that man by whom He is betrayed!”
Then they began to question among themselves, which of them it was who would do this thing.

[1 Corinthians 11:23-26] For I received from the Lord that which I also delivered to you: that the Lord Jesus on the same night in which He was betrayed took bread; and when He had given thanks, He broke it and said, “Take, eat; this is My body which is broken for you; do this in remembrance of Me.” In the same manner He also took the cup after supper, saying, “This cup is the new covenant in My blood. This do, as often as you drink it, in remembrance of Me.” For as often as you eat this bread and drink this cup, you proclaim the Lord’s death till He comes.