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| New calendar | Friday, 18 December 2026 (smaller feast) Friday, 26 February 2027 Saturday, 18 December 2027 (smaller feast) |
|---|---|
| Old calendar | Thursday, 31 December 2026 (smaller feast) Thursday, 11 March 2027 Friday, 31 December 2027 (smaller feast) |
Spellings and nicknames
Sebastianos