וּמֵעֵת֙ הוּסַ֣ר הַתָּמִ֔יד וְלָתֵ֖ת שִׁקּ֣וּץ שֹׁמֵ֑ם יָמִ֕ים אֶ֖לֶף מָאתַ֥יִם וְתִשְׁעִֽים׃
And from the time that the continual burnt-offering shall be taken away, and the detestable thing that causes appalment set up, there shall be a thousand two hundred and ninety days.
Read kabbalistic (mystical) interpretation of Daniel 12:11: and classical mystical sources.