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Cisco Bug: CSCvu00341 - DST/TZ update with 2020a

Last Modified

Oct 27, 2020

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases

10.5(2.10000.5) 11.5(1.10000.6) 12.0(1.10000.10) 12.5(1.10000.22)

Description (partial)

Unified Communication applications (IMP, UC, UCM, etc) have not picked up the latest tzdata version to reflect new TZ/DST changes for 2020

Releases lack DST/TZ update:

Morocco springs forward on 2020-05-31, not 2020-05-24.
Canada's Yukon advanced to -07 year-round on 2020-03-08.
America/Nuuk renamed from America/Godthab.
zic now supports expiration dates for leap second lists.

 Changes to future timestamps
        Morocco's second spring-forward transition in 2020 will be May 31,
        not May 24 as predicted earlier.  Adjust future-year predictions to use the first Sunday after the
        day after Ramadan, not the first Sunday after Ramadan.
        Canada's Yukon, represented by America/Whitehorse and
        America/Dawson, advanced to -07 year-round, beginning with its
        spring-forward transition on 2020-03-08, and will not fall back on

Fiji observes DST from 2019-11-10 to 2020-01-12.
Norfolk Island starts observing Australian-style

Changes to future timestamps
     Fiji's next DST transitions will be 2019-11-10 and 2020-01-12
     instead of 2019-11-03 and 2020-01-19.  
     Norfolk Island will observe Australian-style DST starting in
     spring 2019.  The first transition is on 2019-10-06.
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