This update provides the latest timezone information (2017c) for your system, including following changes:

- Northern Cyprus switches from +03 to +02/+03 on 2017-10-29
- Fiji ends DST 2018-01-14, not 2018-01-21
- Namibia switches from +01/+02 to +02 on 2018-04-01
- Sudan switches from +03 to +02 on 2017-11-01
- Tonga likely switches from +13/+14 to +13 on 2017-11-05
- Turks and Caicos switches from -04 to -05/-04 on 2018-11-04
- Corrections to past DST transitions
- Move oversized Canada/East-Saskatchewan to 'backward' file
- zic(8) and the reference runtime now reject multiple leap seconds within 28 days
of each other, or leap seconds before the Epoch.