My MacBook pro battery totally drained

My MacBook Pro battery was totally drained on Jun 11, 2013. Now the date for everything says either Today, Yesterday, or Jun 11, 2013

Hi there. You might want to do a pram reset. Command/Option/P/R while starting up holding down the keys for three chimes. If that does not help do SMC reset.http://support.apple.com/en-us/HT201295  Then check date and time in system preferences for set date and time automatically.

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    http://support.apple.com/en-us/HT201295
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