Note:-
1) In English noon is 12 O’ clock in a day. And time after that is called the afternoon. In Gujarati “noon” and “afternoon” together is called as બપોર (bapor ).

2) When talking about tomorrow and yesterday, instead of saying આવતી કાલે (AvatI kAle ) or fully ગઈ કાલે (gaI kAle ) people just say કાલે(kAle). The context will convey the correct meaning. if the sentence is in past tense then કાલે(kAle) means yesterday, if it is in future tense then કાલે(kAle) means tomorrow.

When these words are to be used with the preposition “at” or “on”, એ(e) is added to it.
e.g.
Morning -> સવાર (savAr )
at morning -> સવારે ( savAre )
I will do it at morning -> હું સવારે કરીશ ( huM savAre karIsh )

day -> દિવસ (divas )
On this auspicious day -> આ શુભ દિવસે ( A shubh divase )

એ(e) is NOT added with હમણાં (hamaNAM), હવે (have)

I am in office now:- હું અત્યારે ઓફિસમાં છું (huM atyAre ophisamAM ChuM )
We play cricket every day:- અમે દરરોજ ક્રિકેટ રમીએ છીએ (ame dararoj krikeT ramIe ChIe)
He will come back from school in the evening :- એ નિશાળમાંથી સાંજે આવશે (e nishALamAMthI sAMje Avashe)
When will she dance? :- એ ક્યારે નાચશે? (e kyAre nAchashe) ?

English months are called little differently in Gujarati. Below table mentions it.

We use English months in day to day conversations. The Indian/Hindu months are used during religious discussions or rituals or specifying “મુહૂર્ત” of marriage etc.
Like in English, we use words first, second, third .. thirty-first to indicate the date.
For such words in Gujarati, refer
Fractional numbers, sequence, percentage in Gujarati

e.g.
What date is it today? આજે શું તારીખ છે.(Aje shuM tArIkh Che)
તારીખ is a feminine word.
It was 1st July yesterday -> કાલે પહેલી જુલાઈ હતી. (kAle pahelI julAI hatI.)
It is 2nd July today -> આજે બીજી જુલાઈ છે. (Aje bIjI julAI Che.)
It will be 3rd July tomorrow -> આવતી કાલે ત્રીજી જુલાઈ હશે.(AvatI kAle trIjI julAI hashe)
etc.

But it is also common to say number instead of the sequence as if saying one July, two July, three July, etc.
કાલે એક જુલાઈ હતી.(kAle ek julAI hatI).
આજે બે જુલાઈ છે.(Aje be julAI Che)

આવતી કાલે તીન જુલાઈ હશે (AvatI kAle tIn julAI hashe)

What time is it -> કેટલા વાગ્યા ( keTalA vAgyA )
It is one o’ clock -> એક વાગ્યો (ek vAgyo)
It is two o’ clock -> બે વાગ્યા (be vAgyA)
it is four o’ clock -> ચાર વાગ્યા (chAr vAgyA)

For 15 minutes, 30 minutes and 45 minutes past an hour; we use corresponding word in Gujarati. e.g.
Two and half in Gujarati is અઢી(aDhI), so
It is two-thirty -> અઢી વાગ્યા (aDhI vAgyA )

One and a half in Gujarati is દોઢ(doDh), so
It is One thirty -> દોઢ વાગ્યો (doDh vAgyo )

Quarter to two is પોના બે (ponA be)
It is quarter to two -> પોના બે વાગ્યા (ponA be vAgyA )

For other minutes we use વાગીને(vAgIne) as follows:

It is eleven forty -> અગિયાર વાગીને ચાલીસ થઈ ગયા (agiyAr vAgIne chAlIs thaI gayA )
It is nine thirty-five -> નવ વાગીને પાંત્રીસ થઈ ગયા ( nav vAgIne pAMtrIs thaI gayA )

For 1 O’clock and 1.30; verb form is વાગ્યો (vAgyo) as it is singular. For 2 and onwards it is વાગ્યા(vAgyA).

When saying “at a particular time” it is વાગે (vAge)

At one o’clock -> એક વાગે (ek vAge )
At two o’clock -> બે વાગે (be vAge )
At One thirty -> દોઢ વાગે (doDh vAge )
Program is at quarter to two -> કાર્યક્રમ પોના બે વાગે છે  (kAryakram  ponA be vAge છે )

At seven twenty -> સાત વીસ વાગે (sAt vIs vAge)
At two eleven -> બે અગિયાર વાગે (be agiyAr vAge)

For numbers in Gujarati refer

Fractional numbers, sequence, percentage in Gujarati
Numbers in Gujarati – Part 2
Numbers in Gujarati – Part 1