The day of worship of Christ Apostles.

What day is run by the Apostles of Christ for worship?
 
And Paul, as his manner was, went in unto them, and three sabbath days reasoned with them out of the scriptures, (Acts 17:2).   Now when Paul and his company loosed from Paphos, they came to Perga in Pamphylia: and John departing from them returned to Jerusalem.  But when they departed from Perga, they came to Antioch in Pisidia, and went into the synagogue on the sabbath day, and sat down.
(acts 13:13,14).    
And he reasoned in the synagogue every sabbath, and persuaded the Jews and the Greeks.(Acts 18:4).