de warrantia diei

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
DE WARRANTIA DIEI, WRIT, Eng. law. Where a man is required to appear on a 
certain day in person, and before that day the king certifies that the party 
is in the king's service, he may sue this writ, commanding the justices not 
to record his default for that day for the cause before mentioned. F. N. B. 
36. 
    

[email protected]