substract time zone 	1995-07-15 15:30:00+10:00 == 1995-07-15 07:30:00 but with the extra 'gmt' 	1995-07-15 15:30:00 gmt+10:00 == 1995-07-16 01:30:00
substract time zone
	1995-07-15 15:30:00+10:00 == 1995-07-15 07:30:00
but with the extra 'gmt'
	1995-07-15 15:30:00 gmt+10:00 == 1995-07-16 01:30:00

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb