diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index d8b27903593..7fd6b49d1f2 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -8085,6 +8085,10 @@ SELECT regexp_match('abc01234xyz', '(?:(.*?)(\d+)(.*)){1,1}');
         <entry><literal>MM</literal></entry>
         <entry>month number (01&ndash;12)</entry>
        </row>
+       <row>
+        <entry><literal>MZ</literal></entry>
+        <entry>month number (zero&ndash;based) (00&ndash;11)</entry>
+       </row>
        <row>
         <entry><literal>DAY</literal></entry>
         <entry>full upper case day name (blank-padded to 9 chars)</entry>
diff --git a/src/backend/utils/adt/formatting.c b/src/backend/utils/adt/formatting.c
index 5f4b37abad2..484fbc6e17f 100644
--- a/src/backend/utils/adt/formatting.c
+++ b/src/backend/utils/adt/formatting.c
@@ -641,6 +641,7 @@ typedef enum
 	DCH_I,
 	DCH_J,
 	DCH_MI,
+	DCH_MZ,
 	DCH_MM,
 	DCH_MONTH,
 	DCH_MON,
@@ -813,6 +814,7 @@ static const KeyWord DCH_keywords[] = {
 	{"MS", 2, DCH_MS, true, FROM_CHAR_DATE_NONE},
 	{"Month", 5, DCH_Month, false, FROM_CHAR_DATE_GREGORIAN},
 	{"Mon", 3, DCH_Mon, false, FROM_CHAR_DATE_GREGORIAN},
+	{"MZ", 2, DCH_MZ, true, FROM_CHAR_DATE_GREGORIAN},
 	{"OF", 2, DCH_OF, false, FROM_CHAR_DATE_NONE},	/* O */
 	{"P.M.", 4, DCH_P_M, false, FROM_CHAR_DATE_NONE},	/* P */
 	{"PM", 2, DCH_PM, false, FROM_CHAR_DATE_NONE},
@@ -867,6 +869,7 @@ static const KeyWord DCH_keywords[] = {
 	{"month", 5, DCH_month, false, FROM_CHAR_DATE_GREGORIAN},
 	{"mon", 3, DCH_mon, false, FROM_CHAR_DATE_GREGORIAN},
 	{"ms", 2, DCH_MS, true, FROM_CHAR_DATE_NONE},
+	{"mz", 2, DCH_MZ, true, FROM_CHAR_DATE_GREGORIAN},
 	{"of", 2, DCH_OF, false, FROM_CHAR_DATE_NONE},	/* o */
 	{"p.m.", 4, DCH_p_m, false, FROM_CHAR_DATE_NONE},	/* p */
 	{"pm", 2, DCH_pm, false, FROM_CHAR_DATE_NONE},
@@ -3076,6 +3079,13 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out, Oid col
 					str_numth(s, s, S_TH_TYPE(n->suffix));
 				s += strlen(s);
 				break;
+			case DCH_MZ:
+				sprintf(s, "%0*d", S_FM(n->suffix) ? 0 : (tm->tm_mon >= 0) ? 2 : 3,
+						tm->tm_mon - 1);
+				if (S_THth(n->suffix))
+					str_numth(s, s, S_TH_TYPE(n->suffix));
+				s += strlen(s);
+				break;
 			case DCH_DAY:
 				INVALID_FOR_INTERVAL;
 				if (S_TM(n->suffix))
@@ -3760,6 +3770,18 @@ DCH_from_char(FormatNode *node, const char *in, TmFromChar *out,
 					return;
 				SKIP_THth(s, n->suffix);
 				break;
+			case DCH_MZ:
+				if (from_char_parse_int(&out->mm, &s, n, escontext) < 0)
+					return;
+				if (out->mm >= 0 && out->mm <= 11) {
+					out->mm += 1;  // Convert (0-11) to (1-12)
+				}
+				else
+					ereport(ERROR,
+							(errcode(ERRCODE_INVALID_DATETIME_FORMAT),
+							errmsg("Invalid month value for MZ: must be between 0 and 11")));
+				SKIP_THth(s, n->suffix);
+				break;
 			case DCH_DAY:
 			case DCH_Day:
 			case DCH_day:
@@ -4032,6 +4054,7 @@ DCH_datetime_type(FormatNode *node)
 			case DCH_MON:
 			case DCH_Mon:
 			case DCH_mon:
+			case DCH_MZ:
 			case DCH_MM:
 			case DCH_DAY:
 			case DCH_Day:
diff --git a/src/test/regress/expected/horology.out b/src/test/regress/expected/horology.out
index 12eefb09d4d..a6a5d3bef63 100644
--- a/src/test/regress/expected/horology.out
+++ b/src/test/regress/expected/horology.out
@@ -3482,6 +3482,14 @@ SELECT to_date('2458872', 'J');
  01-23-2020
 (1 row)
 
+SELECT to_date('01012025', 'DDMZYYYY');
+  to_date   
+------------
+ 02-01-2025
+(1 row)
+
+SELECT to_date('01122025', 'DDMZYYYY'); -- error
+ERROR:  Invalid month value for MZ: must be between 0 and 11
 --
 -- Check handling of BC dates
 --
diff --git a/src/test/regress/sql/horology.sql b/src/test/regress/sql/horology.sql
index 86481637223..1a37c004882 100644
--- a/src/test/regress/sql/horology.sql
+++ b/src/test/regress/sql/horology.sql
@@ -564,6 +564,9 @@ SELECT to_date('1 4 1902', 'Q MM YYYY');  -- Q is ignored
 SELECT to_date('3 4 21 01', 'W MM CC YY');
 SELECT to_date('2458872', 'J');
 
+SELECT to_date('01012025', 'DDMZYYYY');
+SELECT to_date('01122025', 'DDMZYYYY'); -- error
+
 --
 -- Check handling of BC dates
 --