Para utilizar estes extras, terá de transferir o Firefox.

Iniciar sessão
Ícone do extra

Análises para Simple Browsing Schedule

Simple Browsing Schedule por SimpleBrowsingSchedule

3,4 estrelas de 5
5
9
4
2
3
1
2
1
1
6
Resposta por SimpleBrowsingSchedule

Resposta do programador

publicado a há 8 anos
You might like to edit your Firefox   about:config   settings to enable the timepicker to display correctly:
dom.forms.datetime.timepicker   true

https://support.mozilla.org/en-US/kb/about-config-editor-firefox
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/time