This week in particular is weird for me because I'll be away for a few days and I'll be on west coast time (though I will have my computer). So, this week I'll be available Friday after 6 PM Eastern and pretty much all day on Saturday. Sunday through Wednesday I might be available after 10 or 11 eastern, but that's a guess. After the 4th it's back to normal.
Normal Schedule (not this week): available 6 to 10 (pm, EDT) or so Monday through Wednesday. After 6 on Friday and pretty much anytime throughout the weekend I should be fine, although you never know what comes up here or there.