The furthest time can be is +-12h from your local time (because of politics, weird timezones and summer/winter time I am sure it could maybe be up to +-14, but if all time was sensible it would be 12).

So if it is 8:00 at your place, one side of the international dateline will have 20:00 yesterday and the other side is 20:00 today.

If your current time is more than 12h away from Friday, then I am sorry to say it is not Friday anywhere on earth.

Edit: I wrote this and went to sleep. Woke up thinking, wait this not right!

Its +-12 for me because I live close to GMT+0. For people at the date line it would either be -0/+24 or -24/+0. So its actually -12-(your time zone)/+12-(your time zone).

But regardless of where you live and what time it is, no place on earth can ever be +-24h from your local time, so when this post was new, it was still impossible.