On May 31, 2019, at 10:00, SuStel <sustel@trimboli.name> wrote:

QaQ jajvam

va, vangmeH wot vIbuSqu'taHmo' Doth wot vIlIjchu'pu'!

http://klingonska.org/canon/1997-06-29d-news.txt

Though they both can be translated "today," DaHjaj and jajvam are not quite interchangeable.  As the time element in a sentence, DaHjaj (and not jajvam) is used:

DaHjaj romuluSngan vIHoHpu' "today I killed a Romulan"
(DaHjaj "today," romuluSngan "Romulan," vIHoHpu' "I have killed him/her")

(Notice, unbelievers, the perfective used on an event that was completed during the stated time expression, not before, and which is translated into English as both simple past tense and present perfect tense!)

As the subject of a sentence, on the other hand, jajvam is more typically found:

nI' jajvam "this day is long"
(nI' "[it] is long [in duration], jajvam "this day")

though DaHjaj is not impossible:

nI' DaHjaj "today is long" (nI' "[it] is long [in duration], DaHjaj "today")

Ah, but wait!

KGT:

The son of a Klingon is a man the day he can first hold a blade.

wa' jaj 'etlh 'uchchoHlaH tlhIngan puqloD; jajvetlh loD nen moj.

-- 
SuStel
http://trimboli.name