The RFC indicates it only supports a very limited set of symbolic timezone names; just UTC and US ones:
zone = "UT" / "GMT" ; Universal Time
; North American : UT
/ "EST" / "EDT" ; Eastern: - 5/ - 4
/ "CST" / "CDT" ; Central: - 6/ - 5
/ "MST" / "MDT" ; Mountain: - 7/ - 6
/ "PST" / "PDT" ; Pacific: - 8/ - 7
/ 1ALPHA ; Military: Z = UT;
; A:-1; (J not used)
; M:-12; N:+1; Y:+12
/ ( ("+" / "-") 4DIGIT ) ; Local differential
; hours+min. (HHMM)
You probably need to specify as an offset to UTC.
Since you say you're using Java, it looks like SimpleDateFormat will give you an RFC-822 compliant date if you use Z
to format the zone in your time format (rather than z
).