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	Sancte Teodosie, Cesarea	16
4	II	Sancte quoque Engratie et VIII com. eius mart. Cesaragustanorum die IIII feria Pasce celebrantur ex more sicut ab antiquis patribus noscitur coluisse quia hunc die natalis eorum a nullo hominum certum est verissime	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	Obitum domni Fructuosi aepisc.	29
17	XV		30
May (Gregorian)
18	XIIII	Sancti Eleuteri episc. et com.	1
19	XIII	Sanctorum Claudi et Luperci [et com.]	2
20	XII		3
21	XI		4
22	X		5
23	VIIII		6
24	VIII	Sancti Georgii	7
25	VII		8
26	VI		9
27	V		10
28	IIII		11
29	III	Sancti Salse	12
30	II		13