Home game against the Addicks and away game against the Pilgrims moved.
Southend’s Boxing Day fixture at home to Charlton Athletic will now kick-off at 1pm.
The festive fixture against the Addicks was scheduled for 3pm on the same day but has now been brought forward to 1pm on 26th December.
Blues faced Karl Robinson's side on New Year’s Eve last season at Roots Hall which was also a 1pm kick-off, a game that ended in a 1-1 draw after a late Andrew Crofts equaliser to Simon Cox’s first half strike.
Blues can also confirm that the away game against Plymouth Argyle, originally scheduled for 31st March, has been moved to Good Friday (30th March). The game against the Pilgrims will kick-off at 3pm at Home Park.
To complete the Easter period, Blues face Gillingham at Roots Hall on Monday 2nd April.