In pure JS, this would be how.
How can I find out the number of minutes since midnight for a given
// Your moment var mmt = moment(); // Your moment at midnight var mmtMidnight = mmt.clone().startOf('day'); // Difference in minutes var diffMinutes = mmt.diff(mmtMidnight, 'minutes');
By default, moment#diff will return number rounded down. If you want the floating point number, pass true as the third argument. Before 2.0.0, moment#diff returned rounded number, not a rounded down number.
Consider this pseudocode because I haven't test to see if the difference takes into account DST.