23rd

coming next after the nineteenth in a series

one more than twenty; twenty plus one more; denoting a quantity consisting of twenty-one items or units; -- representing the number twenty-one as Arabic numerals

coming next after the twentieth in a series

one more than twenty-one; denoting a quantity consisting of twenty-two items or units; -- representing the number twenty-two as Arabic numerals

coming next after the twenty-first in a series

one more than twenty-two; denoting a quantity consisting of twenty-three items or units; -- representing the number twenty-three as Arabic numerals

one more than twenty-three; denoting a quantity consisting of twenty-four items or units; -- representing the number twenty-four as Arabic numerals

Without interruption; non-stop; continuous; as, the computer manufacturer provides 24/7 technical help.

coming next after the twenty-third in a series

one more than twenty-four; denoting a quantity consisting of twenty-five items or units; -- representing the number twenty-five as Arabic numerals

coming next after the twenty-fourth in a series

denoting a quantity consisting of twenty-six items or units; -- representing the number twenty-six as Arabic numerals