Agree 100%. I was surprised this is not implemented yet.
I found a solution (kind of) using CSS. It is not very elegant, but it is all I have now:
.ui_tpicker_time_label,
.ui-datepicker-current,
.ui-datepicker-close,
.ui-datepicker-title{
color: transparent !important;
}
.ui_tpicker_time_label:before{
content: "Čas";
color: black;
}
.ui-datepicker-current,
.ui-datepicker-close{
width: 58px !important;
}
.ui-datepicker-current:before{
content: "Teraz";
color: black;
}
.ui-datepicker-close:before{
content: "Uložiť";
color: black;
}
.ui-datepicker-title{
font-size: 1px;
padding-top: 17px;
}
.ui-datepicker-title:before{
content: "Zvoľte čas" !important;
color: black !important;
font-size: 14px;
}