No one can say how old the earth is as even science can not agree with its age using carbon dating. It might be possible to date the generations of man if we backtrack through all the generations ending with Adam, but that would seem impossible since all of us are that generation of Adam. We could even try to use the timeline of Noah and the flood, but yet that will bring no conclusion.
Moses give us the account of the creation events of God in Genesis Chapter 1,2 before God created man, but there is no evidence anywhere in scripture how long each day was or how old the earth is. Genesis 1:1-31; 2:1-3 we read the first six accounts of creation as each part that was finished God saw that it was good as the evening and morning only numbered the days it took, but gives no actual timing of how long each day could have been. I believe each day from evening to morning are only symbolic of a certain length of time it took God to create the heaven and the earth before He created man as God's timing is not the same as our timing, Deuteronomy 7:9; 1Chronicles 16:15; Psalms 50:10; 90:4; 105:8 Ecc 6:6; 7:28; Daniel 5:1; 2Peter 3:8.
God calls each day by number from day one to day six as being evening and morning, but on the seventh day Moses only mentions the word day, but no closing of it as in evening. It was only called a day that God rested from all His work. God set it apart as a day (time) of rest as it has no ending like that of the time of rest when God ushers down the new Jerusalem, Rev 21 and we will have eternal rest without end. There is no mention of it being a Sabbath day rest, but only a day that God set apart as all His work was finished. The seventh day of rest has no ending and if we read Hebrews 4:1-10 this will teach us what Gods day of rest is for those who are faithful to Him and walk in obedience.
Strong's Exhausted Concordance;
The Hebrew word "yowm", Hebrew #3117, translated "day" in English means a day from sunrise to sunset, a space of time defined by an associated term, season, a process of time as in other times (day)
The Hebrew word "ereb", Hebrew #6153, translated "evening" also means dusk, evening, night.
The Hebrew word "boqer", Hebrew #1242, translated "morning" also means dawn, breaking of day, morning with possible metaphoric usage. Our English expression: "The dawning of an age" serves to illustrate this point. The intended meaning of the word should be determined from the context.
Moses give us the account of the creation events of God in Genesis Chapter 1,2 before God created man, but there is no evidence anywhere in scripture how long each day was or how old the earth is. Genesis 1:1-31; 2:1-3 we read the first six accounts of creation as each part that was finished God saw that it was good as the evening and morning only numbered the days it took, but gives no actual timing of how long each day could have been. I believe each day from evening to morning are only symbolic of a certain length of time it took God to create the heaven and the earth before He created man as God's timing is not the same as our timing, Deuteronomy 7:9; 1Chronicles 16:15; Psalms 50:10; 90:4; 105:8 Ecc 6:6; 7:28; Daniel 5:1; 2Peter 3:8.
God calls each day by number from day one to day six as being evening and morning, but on the seventh day Moses only mentions the word day, but no closing of it as in evening. It was only called a day that God rested from all His work. God set it apart as a day (time) of rest as it has no ending like that of the time of rest when God ushers down the new Jerusalem, Rev 21 and we will have eternal rest without end. There is no mention of it being a Sabbath day rest, but only a day that God set apart as all His work was finished. The seventh day of rest has no ending and if we read Hebrews 4:1-10 this will teach us what Gods day of rest is for those who are faithful to Him and walk in obedience.
Strong's Exhausted Concordance;
The Hebrew word "yowm", Hebrew #3117, translated "day" in English means a day from sunrise to sunset, a space of time defined by an associated term, season, a process of time as in other times (day)
The Hebrew word "ereb", Hebrew #6153, translated "evening" also means dusk, evening, night.
The Hebrew word "boqer", Hebrew #1242, translated "morning" also means dawn, breaking of day, morning with possible metaphoric usage. Our English expression: "The dawning of an age" serves to illustrate this point. The intended meaning of the word should be determined from the context.
couldn't resist. 
