| 1199 | Establishment of Eldena monastery by monks from Dargun. | | |
| 1241 | Eldena Monastery is granted the right to build a market, probably later Greifswald. | | |
| 14.5.1250 | Greifswald is granted town status under Lübeck law. | | |
| about 1263 | First mention of Nicholas Church in Rostock city records. | | |
| 1278 | First mention of Greifswald as member of Hanseatic league. | | |
| 14.th C. | Additional building of tower, completed with octagon in early 15th C. | | |
| 1310-1363 | Hanseatic gatherings in Greifswald. | | |
| early 15th C. | Rebuilding of choir. | | |
| from 1411 | Donations in the completed chapels of the side aisles and extensive reshaping of nave as a basilica. | | |
| after 1410 | Gothic wall paintings in the choir (frescos). | | |
| 1440 | Casting of „prayer and professors‘ bell" with engravings of St Nicholas. | | |
| 14.10.1456 | Foundation ceremony of university in St Nicholas Church with bishop, ruling prince and Heinrich Rubenow, mayor of Greifswald and founder of the university. | | |
| 5.7.1457 | Establishment of cathedral chapter. Patronage of Eldena monastery passes to university. St. Nicholas Church becomes collegiate church with the title of cathedral. | | |
| 1460 | Rubenow tablet made (right of entrance, chapel XIV). | | |
| 11.3.1515 | Collapse of 60m high spire from the 120 m tower during a north-west storm with severe damage to the nave. | | |
| 16.7.1531 | First protestant sermon (on Mat. 5,20-26) in St Nicholas by Johann Knipstro from Stralsund. | | |
| 1534-35 | Reformation introduced in Pomerania by the regional parliament of Treptow and general church visitation by Johannes Bugenhagen. | | |
| 13.2.1650 | Spire rebuilt on tower from 1604 onwards collapses again; central nave and southern side aisle damaged. | | |
| 1652-53 | Construction of present spire (total height 99,97 m) in Dutch baroque style (264 steps up to viewing platform) | | |
| from 1648 | End of the 30 years war. | | |
| until 1815 | Greifswald was part of Swedish West Pomerania. | | |
| 1659/1678 | Siege by troops from Brandenburg. | | |
| 1710 | First white washing of Gothic wall paintings (where still in existence after damage by the falling spire); this gave the church its almost monochrome appearance. | | |
| Aug. 1712 | Visit by Czar Peter the Great to Greifswald including visit to all churches and the university. | | |
| 1703-1720 | Construction of baroque screens (confessional chapels). | | |
| 7.9.1774 | Caspar David Friedrich baptised in the cathedral. | | |
| 1824-1833 | Interior restoration in romantic style by the painter and architect Christoph Gottlieb Giese (1787-1838) and the cabinet-maker Christian Friedrich, brother of C.D. Friedrich. Christian Friedrich made the choir panels, altar, altar surround, pulpit, font, stalls, and the organ casing and gallery. | | |
| 1881 | Installation of the three east windows with stained glass. The centre window showed Christ at the top in the tracery circle, the last supper below and then the four evangelists (under restoration). The two outer windows were purely ornamental. | | |
| 10.11.1883 | For the 400th birthday of Martin Luther, the citizens of Greifswald donated the Reformation window, restored in 1995 (chapel XVI). | | |
| 1942-1948 | All art works and cultural treasures removed for storage. | | |
| 29.4.1945 | Surrender of Greifswald without resistance to the Red Army, thanks so the courageous commitment of important Greifswald personalities; hence, the town and churches were not damaged. | | |
| 5.1.1947 | Bishop‘s see established in Greifswald; St Nicholas regains the title of cathedral. The consistory (church authorities) were moved from Szczecin to Greifswald. | | |
| 1977-1981 | Exterior restoration of cathedral. | | |
| from 1982 | Interior restoration under Prof. Friedhelm Grundmann, Hamburg. The floor was covered with 355 gravestones; now markedly different. In the course of this redesign, installation of the music podium and main entrance moved to the south side. | | |
| 31.10.1985 | Dedication of central altar (Gotland limestone) as new liturgical centre. Symbols around base: east - boat with mast (damaged cross); south - Luther rose; west - harp and angel‘s wings; north - fish, cloud, water and flowers. | | |
| 12.3.1988 | Dedication of new, purely mechanical organ in old organ case including parts of the old Buchholz organ. | | |
| 10.6.1989 | Unveiling of crucifix of tin coated bronze (Prof. H. Kock). | | |
| 11.6.1989 | Rededication of St Nicholas Cathedral, shown live on GDR television. | | |
| 18.10.1989 | Start of „prayers for peace“ followed by demonstrations. | | |
| 31.1.1999 | After welding a crack in the crown, the prayer and professors‘ bell is rung again after 20 years of silence. | | |
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