The list of calendar events for a month

• Kalendarium de Carmona (VI cent.)
• Antiphonarium Legionense (X cent. med.)
• Kalendarium Cordubensis (961)
• Codex Vigilanus seu Albeldensis (975)
• Codex Aemilianensis (994)
• Kalendarium de Ripolli (X cent. ex.)
• Liber ordinum sacerdotal (X cent. ex.)
• Liber ordinum episcopal (1052)
• Liber horarum (1055)
• Liber commicus (1067)
• Etymologiarum cum kalendario (1072)
• Missale cum kalendario, fragm. I (XI ex.)
• Kalendarium Mozarabicum, fragm. II
• Santoral de Saint-Michel de Cuxa (XII cent. med.)
• Missale Mixtum (1500)
• Breviarium Gothicum (1502)
• Kalendarium Gothicum (1775)

December (Julian) December (Gregorian)
1	KAL DCMRS		14
2	IIII NNS		15
3	III		16
4	II		17
5	NNS		18
6	VIII IDS		19
7	VII		20
8	VI		21
9	V		22
10	IIII		23
11	III		24
12	II		25
13	IDS		26
14	XVIIII KAL INRS		27
15	XVIII		28
16	XVII		29
17	XVI		30
18	XV		31
January (Gregorian)
19	XIIII		1
20	XIII		2
21	XII		3
22	XI		4
23	X		5
24	VIIII		6
25	VIII	Nativitas Domini nostri Iesu Christi secundum carnem	7
26	VII	Sancti Stefani	8
27	VI	Ioannis apostole	9
28	V		10
29	IIII		11
30	III		12
31	II		13