> header ECC_ODD_TZ Date =~ > /^\s*(?:Sun|Mon|Tue|Wed|Thu|Fri|Sat)\,\s\d{1,2}\s(?:Jan|Feb|Mar|Apr|Jun| > Jul|Aug|Sep|Oct|Nov|Dec)\s\d{4}\s\d{2}(?:\:\d{2}){1,2}\s[\+\-]?\d{2}[123 > 456789]\d$/ > Shouldn't that last bit be: [12456789]\d$/ As you've got it, it will reject an offset of xx30, which, as you pointed out, is valid.