Date & Time Picker for Advanced Custom Fields

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How do I format the time?

You can format the time by creating a mask using the following characters:

H   Hour with no leading 0 (24 hour)
HH  Hour with leading 0 (24 hour)
h   Hour with no leading 0 (12 hour)
hh  Hour with leading 0 (12 hour)
m   Minute with no leading 0
mm  Minute with leading 0
s   Second with no leading 0
ss  Second with leading 0
t   a or p for AM/PM
T   A or P for AM/PM
tt  am or pm for AM/PM
TT  AM or PM for AM/PM

The default time format is HH:mm.

You can read more about formatting the time here.

How do I format the date?

You can format the date by creating a mask using the following characters:

d   day of month (no leading zero)
dd  day of month (two digit)
o   day of the year (no leading zeros)
oo  day of the year (three digit)
D   day name short
DD  day name long
m   month of year (no leading zero)
mm  month of year (two digit)
M   month name short
MM  month name long
y   year (two digit)
yy  year (four digit)

The default date format is yy-mm-dd.

You can read more about formatting the date here.

How do I format the date and time to display it on the frontend?

The plugin saves the date and time in the following format: YYYY-MM-DD hh:mm:ss (for example 2016-04-01 16:57:00). This is the format used by WordPress in wp_posts table, so it’s easy to use this field value in custom meta queries. However the Advanced Custom Fields API returns the date and time in the format set in the field settings, so you can just use the_field() or get_field() function in your theme.

To display the date and time in a different format, you can use strtotime() and date() functions, for example:

echo date('d/m/Y g:i a', strtotime(get_field('date_and_time_field')));

You can also use format_value filter to format the field value.