getTime

-- get the web page with the correct time on it - change as appropriate
local file = http.get("http://www.timeanddate.com/worldclock/uk/london")

-- define patterns to locate date/time in web page
local timematch = "<span id=ct class=h1>"
local datematch = "<span id=ctdat>"
local endmatch = "</span>"

if file == nil then
  -- if web page cannot be opened, display error
  print("Can't open webpage.")
else
  -- loop through each line of web page
  while true do
    -- read line
    local ver = file.readLine()
    -- if nil then at the end of the page, break out of loop
    if ver == nil then break end
    -- find the time pattern
    p = string.find(ver,timematch)
    -- if found,
    if p ~= nil then
      -- get the position of the end pattern
      q = string.find(ver,endmatch,p)
      -- get the string inbetween
      t = string.sub(ver,p+string.len(timematch),q-1)
      -- output time
      write("Time: ")
      print(t)
    end
    -- find the date pattern
    p = string.find(ver,datematch)
    -- if found,
    if p ~= nil then
      -- get the position of the end pattern
      q = string.find(ver,endmatch,p)
      -- get the string inbetween
      d = string.sub(ver,p+string.len(datematch),q-1)
      -- output date
      write("Date: ")
      print(d)
    end
  end
end