Is there a method to aggregate Time Frames ??

Hi,
I'm looking for a method to aggregate 4 of 1H bars.
Try to explain:
I work with a 4H time frame, but I'd like to check the 4H bar every hour.
Now, I'm using 4 different brokers with a GMT, GMT-1, GMT +1 and GMT +2 data feed to check, EVERY Hour, for any pattern on a 4 BAR...
I'm looking for a method to aggregate 4 of 1H bars, I'd like to have 4 graphs showing a 4H bar for every time zone from GMt-1 to gmt+2 with the same data feed.
Is it possible ??
Thank you in advance

Regards,
Montecristo.