fix: ical global tz ids

Author: JesperDramsch

_layouts/calendar-deadlines.ics

@@ -13,12 +13,12 @@ ORGANIZER:pythondeadlin.es
 {%- capture desc -%}<a href="{{conf.link}}">{{ conf.conference }} {{ conf.year }}</a> found on <a href="https://pythondeadlin.es">PythonDeadlin.es</a>.{%- endcapture -%}
 {{ desc | prepend: "DESCRIPTION:" | normalize_whitespace | wrap_lines }}
 DTSTAMP:{{ site.time | date: "%Y%m%dT%H%M%SZ" }}
-DTSTART;TZID=Etc/GMT{{ tz }}:{{ conf.workshop_deadline | date: "%Y%m%dT%H%M%S" }}
+DTSTART;TZID=/Etc/GMT{{ tz }}:{{ conf.workshop_deadline | date: "%Y%m%dT%H%M%S" }}
 {% else %}
 ORGANIZER:pythondeadlin.es
 {{ desc | prepend: "DESCRIPTION:" | normalize_whitespace | wrap_lines }}
 DTSTAMP:{{ site.time | date: "%Y%m%dT%H%M%SZ" }}
-DTSTART;TZID={{ conf.timezone | default: "Etc/GMT+12" }}:{{ conf.workshop_deadline | date: "%Y%m%dT%H%M%S" }}
+DTSTART;TZID=/{{ conf.timezone | default: "Etc/GMT+12" }}:{{ conf.workshop_deadline | date: "%Y%m%dT%H%M%S" }}
 {% endif %}END:VEVENT
 {%- endif -%}
 {% if conf.tutorial_deadline and conf.tutorial_deadline != "TBA" %}
@@ -28,12 +28,12 @@ UID:{{conf.conference | slugify: "latin"}}-{{conf.year}}-tutorial {%- if conf.ti
 ORGANIZER:pythondeadlin.es
 {{ desc | prepend: "DESCRIPTION:" | normalize_whitespace | wrap_lines }}
 DTSTAMP:{{ site.time | date: "%Y%m%dT%H%M%SZ" }}
-DTSTART;TZID=Etc/GMT{{ tz }}:{{ conf.tutorial_deadline | date: "%Y%m%dT%H%M%S" }}
+DTSTART;TZID=/Etc/GMT{{ tz }}:{{ conf.tutorial_deadline | date: "%Y%m%dT%H%M%S" }}
 {% else %}
 ORGANIZER:pythondeadlin.es
 {{ desc | prepend: "DESCRIPTION:" | normalize_whitespace | wrap_lines }}
 DTSTAMP:{{ site.time | date: "%Y%m%dT%H%M%SZ" }}
-DTSTART;TZID={{ conf.timezone | default: "Etc/GMT+12" }}:{{ conf.tutorial_deadline | date: "%Y%m%dT%H%M%S" }}
+DTSTART;TZID=/{{ conf.timezone | default: "Etc/GMT+12" }}:{{ conf.tutorial_deadline | date: "%Y%m%dT%H%M%S" }}
 {% endif %}END:VEVENT
 {%- endif -%}
 {% if cfp != "TBA" %}
@@ -43,12 +43,12 @@ UID:{{conf.conference | slugify: "latin"}}-{{conf.year}} {%- if conf.timezone co
 ORGANIZER:pythondeadlin.es
 {{ desc | prepend: "DESCRIPTION:" | normalize_whitespace | wrap_lines }}
 DTSTAMP:{{ site.time | date: "%Y%m%dT%H%M%SZ" }}
-DTSTART;TZID=Etc/GMT{{ tz }}:{{ cfp | date: "%Y%m%dT%H%M%S" }}
+DTSTART;TZID=/Etc/GMT{{ tz }}:{{ cfp | date: "%Y%m%dT%H%M%S" }}
 {% else %}
 ORGANIZER:pythondeadlin.es
 {{ desc | prepend: "DESCRIPTION:" | normalize_whitespace | wrap_lines }}
 DTSTAMP:{{ site.time | date: "%Y%m%dT%H%M%SZ" }}
-DTSTART;TZID={{ conf.timezone | default: "Etc/GMT+12" }}:{{ cfp | date: "%Y%m%dT%H%M%S" }}
+DTSTART;TZID=/{{ conf.timezone | default: "Etc/GMT+12" }}:{{ cfp | date: "%Y%m%dT%H%M%S" }}
 {% endif %}END:VEVENT
 {%- endif -%}{% endfor %}
 END:VCALENDAR