Quote from Moz:
...Thought this might be useful as well....
The simple but effective method that Jack uses to refer to bars 1 thru 81 throughout the day at first may seem unnecessary but in fact is quite ingenious. Different software packages will time stamp their bars differently - some use the end of the bar, others use the start of the bar. So two people looking at a chart can end up referring to different bars by using a time reference.
The attached HTML is simple e-version of the word doc that moz kindly posted.
1. Time at the top is NY time
2. The bar ID field is calculated using your system time so if you are not
on east coast drop down the box and adjust hours from NY value
3. The grid allows you to jump rapidly to a point of reference for
discussion.
4. Jack actually has a lucky bar number, one of the afternoon ones as I recall.
<img src=http://www.elitetrader.com/vb/attachment.php?s=&postid=1317782>