agendaDay row time format in fullCalendar - fullcalendar

Question

I am trying to set the time format in my calendar rows to appear as 1pm - 2pm, 2pm - 3pm, 3pm- 4pm, etc.
I have tried the following:
agenda: 'h:mm{ - h:mm}',
axisFormat: 'h:mm{ - h:mm}',
day: 'h:mm{ - h:mm}',
axisFormat: 'h(:mm)tt',
timeFormat: {
agenda: 'h:mm{ - h:mm}'
},
but none of the above, either alone or in combination seem to work for me.
I initialize my calendar as below:
$('#calendar').fullCalendar({
defaultView: 'agendaDay',
allDaySlot: false,
firstHour: 9,
minTime: 9,
maxTime: 19,
selectable: true,
unselectAuto: true,
slotMinutes: 60,
weekends: false,
year: current_year,
month: current_month,
date: current_day,
columnFormat: '',

Answer 1

FullCalendar does not provide a "to" time for the axisFormat and therefore the { - h:mm} part of you axisFormat is ignored.
And I don't think there's any way to do it without editing the FullCalendar source code.
But if you are feeling adventurous you could do the following changes in fullcalendar.js around line 3207:
d = zeroDate();
maxd = addMinutes(cloneDate(d), maxMinute);
addMinutes(d, minMinute);
// Add two lines
var toD = cloneDate(d);
addMinutes(toD, opt('slotMinutes'));
slotCnt = 0;
for (i=0; d < maxd; i++) {
minutes = d.getMinutes();
s +=
"<tr class='fc-slot" + i + ' ' + (!minutes ? '' : 'fc-minor') + "'>" +
"<th class='fc-agenda-axis " + headerClass + "'>" +
// Changed line from "formatDate(d, opt('axisFormat')...)" to "formatDates(d, toD, opt('axisFormat')...)"
((!slotNormal || !minutes) ? formatDates(d, toD, opt('axisFormat')) : ' ') +
"</th>" +
"<td class='" + contentClass + "'>" +
"<div style='position:relative'> </div>" +
"</td>" +
"</tr>";
addMinutes(d, opt('slotMinutes'));
// Add line
addMinutes(toD, opt('slotMinutes'));
slotCnt++;
}