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)

April (Julian) April (Gregorian)
1	KAL APLS		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	XVIII KAL MDS		27
15	XVII		28
16	XVI		29
17	XV		30
May (Gregorian)
18	XIIII		1
19	XIII		2
20	XII		3
21	XI		4
22	X		5
23	VIIII		6
24	VIII		7
25	VII		8
26	VI		9
27	V		10
28	IIII		11
29	III		12
30	II		13