From b4dff692bd3ae5a671ccb7c0214ca4d4d728965a Mon Sep 17 00:00:00 2001 From: Paul Andrews Date: Fri, 31 Jul 2020 23:18:46 -0400 Subject: [PATCH] Update README.md --- README.md | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/README.md b/README.md index dd05279..ae28578 100644 --- a/README.md +++ b/README.md @@ -2,3 +2,22 @@ This code is specifically for my ITS1A clock, which is documented here: https://www.nixies.us/projects/its1a-clock/ +The current version uses NTP for time synchronization and can handle daylight-savings time. The format is defined [here](https://www.gnu.org/software/libc/manual/html_node/TZ-Variable.html). There is a full list of strings defined [here](https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv). + +Here are some examples: + +| Location | Value | +| ------------- | ------------- | +| US Central | CST6CDT,M3.2.0,M11.1.0 | +| US Eastern | EST5EDT,M3.2.0,M11.1.0 | +| US Mountain | MST7MDT,M3.2.0,M11.1.0 | +| US Pacific | PST8PDT,M3.2.0,M11.1.0 | +| UK | GMT0BST,M3.5.0/1,M10.5.0 | +| Ireland | IST-1GMT0,M10.5.0,M3.5.0/1 | +| Central Europe | CET-1CEST,M3.5.0,M10.5.0/3 | +| Eastern Europe | EET-2EEST,M3.5.0/3,M10.5.0/4 | +| Japan | JST-9 | +| Australia/Brisbane | AEST-10 | +| Australia/Perth | AWST-8 | +| Australia/Adelaide | ACST-9:30ACDT,M10.1.0,M4.1.0/3 | +| Australia/Sydney | AEST-10AEDT,M10.1.0,M4.1.0/3 |