The fixture of India's limited-overseas tour of Sri Lanka starting next month has been revised. The first one-dayer has been advanced by a day to include a reserve day in case of weather interruptions.The five-match one-day series was originally scheduled to start on July 22 but it will now begin on July 21. Sri Lanka Cricket said this today.The one-day series will be followed by a one-off Twenty20 International. As per the Revised Schedule, the first ODI will be held at Hambantota on July 21. The fifth and last ODI will be played at Pallekele on August 4. The Twenty20 International is slated for August 7.