Hindi/Time

English	Hindi	Transliteration	Notes
Now	अब	ab
Right Now	अभी	abhī
Later	बाद में	bād mēṃ
Then	फिर	phir
Before	पहले	pêhlē
After	बाद	bād
Morning	सुबह/सवेरा	subah/savērā	savērā represents 04:00-05:59, subaha represents 06:00-11:59
Early Morning	सुबह-सुबह	subah-subah
Day	दिन	din	also represents 04:00-19:59, but cannot follow time words.
Afternoon	दोपहर	dopêhêr
Evening	शाम/संध्या	śām/saṃdhyā	saṃdhyā is mostly used in literary contexts, śām represents 16:00-20:00.
Night	रात	rāt	represents 20:00-04:00

Since there is no equivalent of AM or PM in Hindi we have to mention the time of the day along with the specific clock time. For example if we have to say 3 AM, the Hindi equivalent will be रात के/में तीन बजे which literally means 3 o'clock of/in night.

Clock time

English	Hindi	Transliteration
1 AM	रात के एक बजे	rāt kē ēk bajē
7 AM	सुबह के सात बजे	subah kē sāt bajē
2 PM	दोपहर के दो बजे	dopêhêr kē do bajē
6 PM	शाम के छै बजे	śām kē chē bajē
7 PM	शाम के सात बजे	śām kē sāt bajē
8 PM	रात के आठ बजे	rāt kē āṭh bajē
9 PM	रात के नौ बजे	rāt kē nau bajē
midnight	आधी रात	ādhī rāt
Half past	साढे	sār̥hē
Half past 6 (6:30)	साढे ६ (६:३०)	sār̥hē 6
Quarter until	पौने	paunē
Quarter until 4 (3:45)	पौने ४ (३:४५)	paunē 4
Quarter past	सवा	savā
Quarter past 9 (9:15)	सवा ९ (९:१५)	savā 9
20 minutes past 8 (8:20)	८ बजकर २० मिनट (८:२०)	8 bajkar 20 minêṭ
12 minutes past 3 (3:12)	३ बजकर १२ मिनट (३:१२)	3 bajkar 12 minêṭ
7 minutes to 10 (9:53)	१० बजने को ७ मिनट (९:५३)	10 bajnē ko 7 minêṭ

There are two exceptions to the Half past. Half past one (1:30) is डेढ़ (ḍēr̥h) and half past 2 (2:30) is ढाई (ḍhāī). A fun way to remember their order would be 'Unless you dare (Let's say this represents डेढ़) you die (and this represents ढाई). Voila!