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 (Gregorian)
1	KAL APLS
2	IIII NNS
3	III
4	II
5	NNS
6	VIII IDS
7	VII
8	VI
9	V
10	IIII
11	III
12	II
13	IDS
14	XVIII KAL MDS
15	XVII
16	XVI	Sanctae Engratie et XVIII martyrum
17	XV
18	XIIII
19	XIII	Sanctorum Claudii et Luperci
20	XII
21	XI
22	X
23	VIIII
24	VIII	Sancti Georgii
25	VII	Sancti Marci, apostoli et euangeliste
26	VI	Sancti Timothei
27	V
28	IIII	Sancti Prudentii et sociorum eius
29	III
30	II