date from string and format string
function makeDateFromStringAndFormat(config) {
        // This array is used to make a Date, either with `new Date` or `Date.UTC`
        var tokens = config._f.match(formattingTokens),
            string = config._i,
            i, parsedInput;

        config._a = [];

        for (i = 0; i < tokens.length; i++) {
            parsedInput = (getParseRegexForToken(tokens[i], config).exec(string) || [])[0];
            if (parsedInput) {
                string = string.slice(string.indexOf(parsedInput) + parsedInput.length);
            }
            // don't parse if its not a known token
            if (formatTokenFunctions[tokens[i]]) {
                addTimeToArrayFromToken(tokens[i], parsedInput, config);
            }
        }

        // add remaining unparsed input to the string
        if (string) {
            config._il = string;
        }

        // handle am pm
        if (config._isPm && config._a[3] < 12) {
            config._a[3] += 12;
        }
        // if is 12 am, change hours to 0
        if (config._isPm === false && config._a[3] === 12) {
            config._a[3] = 0;
        }
        // return
        dateFromArray(config);
    }