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I created a form with two time time input fields where users can enter in & out times and a third calculation field to find the duration by subtracting in from out time. Everything works correctly except that the time field allow entry up to 23:59 which makes the duration calucation incorrect when the out time is end of the day. (24:00)
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Is there a way solve this like allowing 24:00 time in hh:mm mask etc??

After some digging inside the jquery.inputmask.js file , When I commented out the following part of the code, now time up to 24:59 can be entered in a field with input mask hh:mm.

/*
 if ("24" === e.hourFormat && 24 === parseInt(a, 10)) return b.buffer[c - 1] = "0", b.buffer[c] = "0",
 {
 refreshFromBuffer:
 {
 start: c - 1,
 end: c
 },
 c: "0"
 };
 */

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What I need now is to allow only 00 in minutes part when hour hh is 24. Can anyone be helpful ?

Hi shahabpk,
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The documentation here for the InputMask library may help you.
​
Bob

In 24 hour time I'm pretty sure there's no such thing as 24:00, it goes back to 0:00

healyhatman is correct. But As a historical practice we use 24:00 time to indicate the end of the day and 00:00 as the beginning of the day. Since date is not included with time while saving the data, 24:00 is better to validate time overlap with other entries. Mysql time field allows entry 24:00, even though php takes it as 00:00. Its okay if the mask allows the entry. Meanwhile I was able to write some custome javascript to reset the field if user enters time greater than 24:00 say 24:30.