Comment 3 for bug 441223

Did you checked compatibility with XEP-0202 and XEP-0082? Probably it is ok, but I am just asking.

Other remark: it seems the -gmt option is obsolete according to http://www.tcl.tk/man/tcl8.5/TclCmd/clock.htm#M19 Maybe the code should be rewritten using the -timezone option?