In Lojban there is no universal method of saying:
this hour, this morning, today, next day, tomorrow, next hour.
Ofc. we have {bavlamdei} but they have the same problem as {PAmei}, namely, you can't extract the number of time periods that the necessary segment is apart from the referenced one.
E.g. "the day before yesterday" is definitely connected with the number 2 (or 3 if you count starting from today) however there is no way to extract this 2 from a lujvo meaning "the day before yesterday" (like {pruprulamdei}).
We can't use {za} either. If it's 23:00 then tomorrow is not {baza lo djedi be li pa} because tomorrow starts in only one hour.
So here we have a different concept of splitting time.
Unlike {cacra}, {djedi}, {nanca} that split the time into intervals of a fixed length (that can even overlap)
such concepts as "tomorrow", "this hour" split time into spliced (put in order end to end) intervals by default from midnight for "day", the beginning of the year (e.g. January 1) for "month" etc.
One workaround is {ca lo 2001moi nanca}, which is cheating since it's not stated that those one-year time intervals don't overlap. Other methods like cmevla for names of years described in L4B share the same problem with {cabdei}, {bavlamdei}.
What is more, I found a bunch of gismu that have this splicing interval sumti type:
cerni1 (cerni = x1 is a morning of day x2 ...)
citsi
crisa
critu
donri
dunra
murse
nicte
temci
vanci
vensa
So I suggest that we use either a cmavo or a jvajvo-generating prefix for {djedi}, {cacra} ... to change to splicing intervals when we need them.