diff options
Diffstat (limited to 'www')
| -rw-r--r-- | www/js/utils.js | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/www/js/utils.js b/www/js/utils.js index 09c6333..4f0bb34 100644 --- a/www/js/utils.js +++ b/www/js/utils.js @@ -73,6 +73,18 @@ function msToTimeString(time) { return h + ':' + m.pad(2) + ':' + s.pad(2) + '.' + hs; } +function get_tz_offset() { + // + // This computes the timezone offset for Europe/Vienna + // in seconds. This is either 3600 or 7200 depending on + // daylight savings time... + // For Europe/Vienna daylight saving starts on the last + // Sunday in March and ends on the last Sunday in October + // always at 3am + // + return 3600; // TODO: calculate the real offset +} + function get_rd_week() { // // This computes the current Rivendell Week based on the number @@ -81,14 +93,16 @@ function get_rd_week() { // Explanation: // epoch was at 01.01.1970 which was a Thursday. // Monday in that week is (s-from-epoch + 3*24*60*60) seconds ago. + // This needs to be adjusted by the timezone offset for Europe/Vienna + // which is of course not constant (damn you daylight savings time) // Divide this by (7*24*60*60) and you get the number of - // weeks since the Monday in the week of epoch. + // weeks since the Monday in the week of epoch adjusted for timezone offsets. // This week had week number 3 so add an offset of 2 and // get the modulo of 4. This rounded down gives you the current week // with 0 meaning Week 1. So add 1 to that number and you will get // the current RD week. // - var sEpoch = (+new Date()) / 1000; + var sEpoch = ((+new Date()) / 1000) + get_tz_offset(); var week = Math.floor((((sEpoch + 259200)/604800) + 2) % 4) + 1 return week; } |