what does this a means in dd/MM/yyyy hh:mm a under date time custom settings

For changing the date time format in pega we use custom option but what does “a” implies in dd/MM/yyyy hh:mm a .

Please find the screenshot attached.

@TanyaS58

a is denoting AM/PM. Examples:

If we format create date time in the report as “hh:mm a” → output is 02:12 AM

without a i.e. “hh:mm” → output is 02:12

@TanyaS58 a in the format stands for AM/PM. Please refer attachment below,