Prepositions of Time - Penggunaan at, on, dan in pada waktu dan tanggal

Bagaimana penggunaan preposisi at, on dan in untuk menyatakan waktu dan tanggal dalam grammar bahasa Ingris?
Patokan yang mudah adalah berdasarkan skala durasi waktu,

at digunakan untuk waktu jam, morning, midnight, periode durasi waktu yang pendek
on digunakan untuk hari dan tanggal
in digunakan untuk bulan, musim, tahun, abad, periode durasi waktu yang panjang

*Tentu ada beberapa pengecualian. Nanti akan kita bahas di akhir.

Contoh penggunaan at:

at 6 o'clock
at 5:00pm
at midnight
at bedtime
at lunchtime
at sunset
at the moment
Let's meet at 5:00.
He has a work to do at 7am.
The cinema opens at midnight.
My brother came home at dinnertime.

Contoh penggunaan on:

on Sunday (= pada hari Senin)
on Sundays (= setiap hari Minggu)
on 17 August
on 17 August 2015
on Independence Day
on her birthday
on New Year's Eve (= pada malam tahun baru)
When is your sister birthday? Her birthday is on 25 December.
I usually have dinner at 7:30 pm.
He was born on 1 January 2000.
I will go to Japan on 1 Syawal.

Contoh penggunaan in:

in June
in Ramadhan
in winter
in the winter
in 2015
in the 2015s
in the next year
in the Modern Era
in the future
Do you have a vacation in this summer?
There will be a victory in the next year.
I like to play snow in the winter.
His arrival is in November in the fall.

.
.

Pengecualian, perhatikan bedanya:

We have to go to bed at 9:00 at night.
We have to go to bed at 9:00 in the evening.

Preposisi at memiliki standar dalam penggunaan:

at night --> The bats fly at night.
at the same time --> We come home at the same time.
at present --> She's with the client at present. Please call back.
at the moment --> He is still busy at the moment. Do not disturb.
at the weekend* --> We go out for dinner at the weekend.
at Christmas*/Iedul Fitri --> I stay with my family at Iedul Fitri.

*penggunaan "on the weekend" dan "on Christmas" juga diperkenankan.
.

Ringkasan Penggunaan at - on - in:

I met her at night.
I met her at 7:00 pm.
I met her on Monday.
I met her on 17 August.
I met her in the summer.
I met her in August.
I met her in 2015.
I met her in the evening. (in the night tidak umum dipakai)

Panduan Praktis:

at untuk jam
on untuk hari
in untuk bulan dan tahun

*dengan beberapa pengecualian