Table printing contents in random order

I am using computercraft version 1.78 for minecraft 1.8.9

When I tried to print the contents of the table it would print the key and the corresponding value together, but it would chose a key at random to print.

  local table = {January=31, February=28, March=31, April=30, May=31, June=30, July=31, August=31, September=30, October=31, November=30, December=31

  for key,value in pairs(table) do

	print(key)
	print(value)

  end

The result from running the program is as follows

December
31
May
31
April
30
January
31
August
31
July
31
September
30
February
28
October
31
June
30
March
31
November
30

String key's aren't stored numerically like numerical indexes are. When pairs is used on them they're sorted by the memory address and not the actual string.

How would I print them numerically then? ipairs doesn't return anything.

You could set it up as a table with 12 tables inside of them with each of the days and names inside of that set with static keys.

local months = { { name = "January", days = 31 } , { name = "February" , days = 28 } }

Then you could ipairs on the months table

for index,valueTable in ipairs(months) do
  print(index)
  print(valueTable.name)
  print(valueTable.days)
end