(cross-posting to tz and IBM-MAIN) Hi, TZData, On a Linux system, I see: 1043 $ uname -a Linux Bunsen5-PG 4.9.0-11-686-pae #1 SMP Debian 4.9.189-3+deb9u2 (2019-11-11) i686 GNU/Linux 1044 $ cat /usr/share/zoneinfo/Asia/Tel_Aviv | tail -1 IST-2IDT,M3.4.4/26,M10.5.0 1045 $
... This would seem to be Month 3, Week 4, Day 4, hour 26. 26? Is that supposed to be 02:00 the next day? But POSIX says: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08 ... The hour shall be between zero and 24, and the minutes (and seconds) -if present-between zero and 59. The result of using values outside of this range is unspecified. z/OS (which supports only POSIX format) seems to ignore that TZ (as allowed by "unspecified") and use UTC0: https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.1.0/com.ibm.zos.v2r1.bpxa500/bpxa50065.htm (It doesn't specify.) Ouch! -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN