Module:Aligned dates list

 local p = {}

 function p.main(frame)
 local output = {}
 local monthNames = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}
 local daysInMonth = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}

 local function generateSuffixes()
 local suffixes = {""}
 for char = string.byte("b"), string.byte("z") do
 table.insert(suffixes, string.char(char))
 end
 return suffixes
 end

 local suffixes = generateSuffixes()

 for month = 1, 12 do
 local monthName = monthNames[month]
 local days = daysInMonth[month]

 for day = 1, days do
 for _, suffix in ipairs(suffixes) do
 local key1 = string.format("%02d-%02d%s", month, day, suffix)
 local key2 = string.format("%s %02d%s", string.sub(monthName, 1, 3), day, suffix)
 local key3 = string.format("%s %02d%s", string.lower(string.sub(monthName, 1, 3)), day, suffix)
 local value = frame:getParent().args[key1] or frame:getParent().args[key2] or frame:getParent().args[key3]

 if value then
 table.insert(output, string.format('<div><div style="width:4em;display:inline-block;">%s %d</div> <div style="display:inline-block;">%s</div></div>', monthName, day, value))
 end
 end
 end
 end

 return table.concat(output)
 end

 return p