On grammatical class:

ba
time tense relation/direction: will [selbri]; after [sumti]; default future tense.
ca
time tense relation/direction: is [selbri]; during/simultaneous with [sumti]; present tense.
pu
time tense relation/direction: did [selbri]; before/prior to [sumti]; default past tense.
xa'ei
time tense relation/direction: disconnected in time/place; causally disjoint
baba
time tense: will be going to; (tense/modal).
baca'a
time tense: future actuality; modal aspect.
bapu
time tense: will have been; (tense/modal).
caca'a
time tense: present actuality; modal aspect.
cajeba
time tense: during and after; (tense/modal).
caku
Now. At the present time.
ca ma
sumti question asking for a time/date/event; simultaneous with what?.
cazi
right now
cazu
nowadays, wide sense of "now"
puba
time tense: was going to; (tense/modal).
puca'a
time tense: past actuality; modal aspect.
pujeba
time tense: before and after; (tense/modal).
pujeca
time tense: before and during; (tense/modal).
pupu
time tense: had earlier been; (tense/modal).
puza
time tense: a medium time before; (tense/modal).
puze'a
time tense: for a medium length interval some time in the past; (tense/modal).
puze'i
time tense: for a short interval some time in the past; (tense/modal).
puze'u
time tense: for a long interval some time in the past; (tense/modal).
puzi
time tense: a short time before; (tense/modal).
puzu
time tense: a long time before; (tense/modal).
puzuvukiku
time-tense discursive: a long time ago and far away; locks frame-of-reference of time and space

In definition:

bancupuxu
x1 is the language with ISO 639-3 code “cpx” (Pu-Xian Chinese).
banpu'uku
x1 is the language with ISO 639-3 code “puk” (Pu Ko).
cmavrpu
x1 is the selma'o "PU".
jinmrplutoni
x1 is a quantity of/contains/is made of plutonium [Pu]

In notes:

rore'u
(for the) last time
narprugastcica
x1 (event) causes jamais-vu to x2 (person) using sense x3 under conditions x4
prugastcica
x1 (event) causes déjà-vu to x2 (person) using sense x3 under conditions x4
puvza
x1 happened x2 length of time ago; x1 happened x2 length of time before x3
ca'au
Refers to what is usually assumed to be the argument of tense tags when no explicit argument is given
ca'ei
shorthand for {ca lo nu}; during the event-of
coi'e
x1 is PA hours in duration by standard x2.
doi'e
x1 is PA days in duration by standard x2.
jei'o
x1 is PA weeks in duration by standard x2.
lei'o
x1 is PA months in duration by standard x2.
moi'e
x1 is PA minutes in duration by standard x2.
nei'o
x1 is PA years in duration by standard x2.
soi'e
x1 is PA seconds in duration by standard x2.
vy'y
brisni/statement terminator.
purzida
x1 is a part of Lojban text representing rule 'time-offset' according to the first edition of the book 'The Complete Lojban Language'.
zilze'apuda
x1 is a part of Lojban text representing rule 'time' according to the first edition of the book 'The Complete Lojban Language'.