(That's a good, catching phrase, "hebdomadary," though it's hard to say.    From Wordnik.com.  [The Wrecker] Reference

Also on days when there is a principal or processional feast, each one of them, including the hebdomadary, is to have five eggs.    From Wordnik.com.  [Alps and Sanctuaries of Piedmont and the Canton Ticino] Reference

Also if there is any cloistered person who has begun his week of being hebdomadary, and falls into such sickness that he cannot celebrate the same, the cantor is to say or celebrate three masses.    From Wordnik.com.  [Alps and Sanctuaries of Piedmont and the Canton Ticino] Reference

Item, he is to pay the prior of the cloister six florins for his fine 56 ... and three florins to the .... 57 and he should also give five eggs per diem to the hebdomadary of the high altar, except in Lent.    From Wordnik.com.  [Alps and Sanctuaries of Piedmont and the Canton Ticino] Reference

After the seventh century, the Bishop of Palestrina was one of the hebdomadary prelates for the services of the Lateran basilica, and was, therefore, a cardinal; he is the fourth, in order, of the cardinal-bishops.    From Wordnik.com.  [The Catholic Encyclopedia, Volume 11: New Mexico-Philip] Reference

The Squire having expressed to his friend a desire of perambulating these boundaries, they proceeded, by the way of George street, to explore the sanctified labyrinths, the scenes of diurnal clamour, and hebdomadary conflict.    From Wordnik.com.  [Real Life In London, Volumes I. and II. Or, The Rambles And Adventures Of Bob Tallyho, Esq., And His Cousin, The Hon. Tom Dashall, Through The Metropolis; Exhibiting A Living Picture Of Fashionable Characters, Manners, And Amusements In High And Low Life (1821)] Reference

The prohibition of the use of fleshmeat and milk at one meal: the hebdomadary symposium of incoordinately abstract, perfervidly concrete mercantile coexreligionist excompatriots: the circumcision of male infants: the supernatural character of Judaic scripture: the ineffability of the tetragrammaton: the sanctity of the sabbath.    From Wordnik.com.  [Ulysses] Reference

“Item, touching the office of cellarer, it is ordered that the cellarer do serve out to the whole convent bread, wine, oil, and salt; as much of these two last as any one may require reasonably, and this on all days excepting when the infirmarer serves out kitchen meats, but even then the cellarer is to serve his rations to the hebdomadary.    From Wordnik.com.  [Alps and Sanctuaries of Piedmont and the Canton Ticino] Reference

But simultaneously with this centrifugal force, an equal and opposite force generated by the same desire to be sociable drew her attention back to her own attire, her plume, her necklace, her bodice and also to that of the Princess, whose subject, whose slave her cousin seemed thus to proclaim herself, come thither solely to see her, ready to follow her elsewhere should it have taken the fancy of the official occupant of the box to rise and leave, and regarding as composed merely of strangers, worth looking at simply as curiosities, the rest of the house, in which, nevertheless, she numbered many friends to whose boxes she regularly repaired on other evenings and with regard to whom she never failed on those occasions to demonstrate a similar loyalism, exclusive, conditional and hebdomadary.    From Wordnik.com.  [The Guermantes Way] Reference