On 2017-01-17 22:09, dikshie wrote:
[E]ven as native Indonesian, I don't know when Indonesia began to use the abbreviation (WIB, WITA, and WIT). President decree number 41 year 1987 does not mention the abbreviation and I don't have original document of previous President decree (President decree number 243 year 1963) [1].
Thanks for the source which gives the full names of the three time zones. The decree of 1963 probably has established the three time zones with UTC + 07 h, UTC + 08 h, and UTC + 09 h. Before that time, the names Waktu Indonesia Barat and Waktu Indonesia Tengah would have made little sense because both regions used UTC + 07:30 h. My point, however, was not the proleptic use of WITA in itself but only its unsystematic consequence in the proposed change to tzdb: from 1948-05 until 1950-05, all three time scales of Asia/Jakarta, Asia/Pontianak, and Asia/Makassar agree with UTC + 08 h; but the tzdb abbreviations are different: two use +08, and one uses WITA. This is unlikely to reflect local practice. Michael Deckers. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus